Activity log for bug #160763

Date Who What changed Old value New value Message
2007-11-07 17:01:55 Enrico Gueli bug added bug
2007-11-07 17:02:30 Enrico Gueli bug added attachment 'dmidecode.txt' (dmidecode output)
2007-11-07 17:02:57 Enrico Gueli bug added attachment 'dmesg.txt.gz' (dmesg output)
2007-11-07 17:03:51 Enrico Gueli bug added attachment 'lspci.txt' (lspci -vvnn output)
2007-11-07 17:21:43 Enrico Gueli bug added attachment 'sys_before_after_sleep.diff' (sys_before_after_sleep.diff)
2007-12-20 21:11:10 Leann Ogasawara bug assigned to linux (Ubuntu)
2007-12-20 21:11:24 Leann Ogasawara linux: status New Incomplete
2007-12-28 03:35:57 Leann Ogasawara linux-source-2.6.22: status New Won't Fix
2007-12-28 20:26:55 Enrico Gueli bug added attachment 'dmesg.txt.gz' (dmesg output after first suspend/resume)
2007-12-31 19:07:31 Leann Ogasawara linux: importance Undecided Medium
2007-12-31 19:07:31 Leann Ogasawara linux: assignee ubuntu-kernel-team
2007-12-31 19:07:31 Leann Ogasawara linux: status Incomplete Triaged
2008-04-26 23:26:06 Enrico Gueli bug assigned to linux-source-2.6.24 (Ubuntu)
2008-05-01 18:40:42 Leann Ogasawara linux-source-2.6.24: status New Invalid
2008-09-23 09:17:06 Boris Kazakov bug added attachment 'lscpi.txt' (lscpi.txt)
2008-12-02 12:23:26 Enrico Gueli title Acer Aspire 5720 hangs on second resume from standby Acer Aspire 5720 hangs on second resume from suspend, i.e. suspends only once
2009-04-27 21:36:29 Tomasz Guziałek attachment added Instructed by this link: https://wiki.ubuntu.com/DebuggingKernelSuspend http://launchpadlibrarian.net/26045015/pm-suspend_after_crash.txt
2009-04-27 21:37:41 Tomasz Guziałek attachment added Dmesg after BIOS update. http://launchpadlibrarian.net/26045035/dmesg_flash_bios_2.txt
2009-04-28 17:29:34 Philippe Chabbert removed subscriber Philippe Chabbert
2009-05-01 08:46:21 NetGhost removed subscriber NetGhost
2009-08-03 20:07:28 mrrusof attachment added dmesg.txt http://launchpadlibrarian.net/29835277/dmesg.txt
2009-08-11 21:46:33 AndrewJ removed subscriber AndrewJ
2009-08-12 22:59:32 mrrusof bug watch added http://bugzilla.kernel.org/show_bug.cgi?id=13121
2009-08-20 11:58:28 Can Koy bug watch added http://bugzilla.kernel.org/show_bug.cgi?id=13931
2009-11-09 17:00:19 pramsay13 removed subscriber pramsay13
2009-11-10 13:54:28 nickolai removed subscriber nickolai
2009-11-16 03:40:17 Boris Kazakov removed subscriber Boris Kazakov
2010-04-06 20:03:45 Milan Bouchet-Valat bug task added linux
2010-05-18 21:07:17 Maxim Levitsky summary Acer Aspire 5720 hangs on second resume from suspend, i.e. suspends only once Acer Aspire 5720 hangs on second resume from suspend, i.e. suspends only once [BIOS PROBLEM]
2010-05-18 21:18:20 Simon removed subscriber Simon
2010-05-18 21:54:35 Maxim Levitsky description This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; I followed the instructions at https://wiki.ubuntu.com/DebuggingKernelSuspend. If I execute that command even for first standby, at next reboot I have these data: Magic number: 0:35:185 hash matches drivers/base/power/resume.c:57 hash matches device device:44 Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work... This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. UPDATE: this is BIOS problem. It hangs early and doesn't pass control to linux. Linux has no chance to bring system back from standby not understand why that happens. These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; I followed the instructions at https://wiki.ubuntu.com/DebuggingKernelSuspend. If I execute that command even for first standby, at next reboot I have these data: Magic number: 0:35:185 hash matches drivers/base/power/resume.c:57 hash matches device device:44 Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work...
2010-05-18 21:56:24 Maxim Levitsky description This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. UPDATE: this is BIOS problem. It hangs early and doesn't pass control to linux. Linux has no chance to bring system back from standby not understand why that happens. These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; I followed the instructions at https://wiki.ubuntu.com/DebuggingKernelSuspend. If I execute that command even for first standby, at next reboot I have these data: Magic number: 0:35:185 hash matches drivers/base/power/resume.c:57 hash matches device device:44 Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work... This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. It not possible to understand what triggers that BIOS hang. It probably is some bug that by chance doesn't trigger on windows. These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; I followed the instructions at https://wiki.ubuntu.com/DebuggingKernelSuspend. If I execute that command even for first standby, at next reboot I have these data: Magic number: 0:35:185 hash matches drivers/base/power/resume.c:57 hash matches device device:44 Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work...
2010-05-19 21:27:59 Maxim Levitsky attachment added fix.diff http://launchpadlibrarian.net/48777450/fix.diff
2010-05-21 18:41:34 allynfolksjr removed subscriber allynfolksjr
2010-05-21 21:36:22 Maxim Levitsky attachment added acpi-ec-pm-fix-race-between-ec.patch http://launchpadlibrarian.net/48892411/acpi-ec-pm-fix-race-between-ec.patch
2010-05-22 22:06:53 Oliver Willemse removed subscriber Oliver Willemse
2010-05-31 18:19:57 Maxim Levitsky linux (Ubuntu): assignee Maxim Levitsky (maximlevitsky)
2010-05-31 18:27:18 Maxim Levitsky attachment added writereg http://launchpadlibrarian.net/49453243/writereg
2010-05-31 18:28:23 Maxim Levitsky attachment added writereg.c http://launchpadlibrarian.net/49453279/writereg.c
2010-05-31 18:28:58 Maxim Levitsky attachment added make_s2ram_work http://launchpadlibrarian.net/49453292/make_s2ram_work
2010-05-31 18:41:44 Maxim Levitsky description This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. It not possible to understand what triggers that BIOS hang. It probably is some bug that by chance doesn't trigger on windows. These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; I followed the instructions at https://wiki.ubuntu.com/DebuggingKernelSuspend. If I execute that command even for first standby, at next reboot I have these data: Magic number: 0:35:185 hash matches drivers/base/power/resume.c:57 hash matches device device:44 Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work... This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change, (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work...
2010-05-31 21:55:46 Enrico Gueli attachment added 10AcerNVS http://launchpadlibrarian.net/49464695/10AcerNVS
2010-05-31 22:57:24 Maxim Levitsky description This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change, (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work... This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change,  (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work...
2010-05-31 22:58:20 Maxim Levitsky description This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change,  (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work... This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change,  (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work...
2010-05-31 23:00:20 Maxim Levitsky description This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change,  (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work... This problem has been posted in Ubuntuforums (http://ubuntuforums.org/showthread.php?t=600450), but got no answer. My Acer Aspire 5720 running Ubuntu Gutsy 7.10 is unable to resume from a standby when another standby/resume has occurred. The power LED turns from blinking orange to stable green, but screen backlight remains off and - I suppose - the processor fan stays off too. I can hear the hard drive and CD-ROM spinning up, but the system is completely unresponsive. I have to turn it off pressing the power key long enough. On Windows XP and Vista, standby works OK. *UPDATE* this is BIOS problem. system hangs early and doesn't pass control to Linux. Linux has no chance to bring system back. The BIOS hangs due to a bug that windows doesn't trip over due to its ACPI noncompliance. There is a reserved memory region called ACPI NVS, which belongs to BIOS and supposed to be saved/restored during suspend to disk. However, Windows *against* the ACPI spec, saves/restores this region on suspend to ram too. BIOS changes this region slightly on resume, and this change,  (more precisely a single byte change at <region start> + 0x29010 00->0xFF) makes it hang on second resume. Since windows restores this region, this change is also restored and thus masks this bug. Its likely that next version of linux kernel will adopt same behavior. Latest BIOS to have this bug is 1.42 (and updating to semi-official(doesn't show up on all acer sites) 1.45 BIOS, was reported to keep this bug) These are the attempts made so far. Where not specified, nothing changed in the behaviour. - adding "ec_intr=0" to the boot cmdline; - adding "acpi_osi=!Linux"; - executing Ubuntu in single-user mode, using /etc/acpi/sleep.sh to sleep; toggling the following flags in /etc/default/acpi-support, one by one: - ACPI_SLEEP_MODE=standby -> the script stops and says "echo: write: No such device" writing 'standby' to /sys/power/state - SAVE_VBE_STATE=false - POST_VIDEO=false - USE_DPMS=false - DISABLE_DMA=true - RESET_DRIVE=true - ENABLE_LAPTOP_MODE=true - DOUBLE_CONSOLE_SW=true - toggling more than one flag like described here: http://de.wikibooks.org/wiki/Asus_W3N-Kompendium:_Ubuntu_Suspend_to_Ram -> hangs on first resume - disabling all services in /etc/rcS.d, then killing most of the processes, then removing most of the modules; - adding "noapic nolapic" to the boot cmdline -> hangs on first resume; - adding "pci=routeirq" to the boot cmdline; - toggling BIOS SATA emulation from AHCI to PATA; - disabling all scripts in /etc/acpi/{suspend,resume}.d -> apart from the screen unable to work at first resume, nothing changed; - upgrading BIOS from 1.14 to 1.19; Any help is VERY appreciated! This is definitely the bug that keeps me to using Linux for everyday work...
2010-06-04 17:57:56 Nigel Babu removed subscriber Ubuntu Review Team
2010-06-27 15:31:49 Maxim Levitsky linux (Ubuntu): status Triaged Fix Released
2010-06-27 22:13:16 Milan Bouchet-Valat linux (Ubuntu): status Fix Released Triaged
2010-06-27 22:13:23 Milan Bouchet-Valat nominated for series Ubuntu Lucid
2010-06-27 22:14:26 Milan Bouchet-Valat linux (Ubuntu): assignee Maxim Levitsky (maximlevitsky)
2010-07-28 16:35:41 Brian Murray bug added subscriber Ubuntu Review Team
2010-07-28 16:35:44 Brian Murray tags cft-2.6.27 intrepid linux-2.6.27 resume suspend cft-2.6.27 intrepid linux-2.6.27 patch resume suspend
2010-07-30 20:27:28 Tim Gardner nominated for series Ubuntu Maverick
2010-07-30 20:27:28 Tim Gardner bug task added Ubuntu Maverick
2010-07-30 20:27:28 Tim Gardner bug task added linux (Ubuntu Maverick)
2010-07-30 20:27:28 Tim Gardner bug task added linux-source-2.6.22 (Ubuntu Maverick)
2010-07-30 20:28:55 Tim Gardner linux-source-2.6.22 (Ubuntu Maverick): status Won't Fix Fix Released
2010-07-30 20:28:55 Tim Gardner linux-source-2.6.22 (Ubuntu Maverick): assignee Tim Gardner (timg-tpi)
2010-08-12 17:05:41 Leann Ogasawara linux (Ubuntu Maverick): status Triaged Fix Released
2010-11-01 21:26:23 Frodon bug added subscriber Frodon
2011-01-24 06:37:57 Bug Watch Updater linux: status Unknown Fix Released
2011-02-04 12:43:59 Bug Watch Updater linux: importance Unknown Medium
2011-10-05 22:02:03 Jeremy Foshee removed subscriber Jeremy Foshee