Video not initialized correctly on resume with Intrepid/amd64 RS482 [Radeon Xpress 200M]

[Chris]

Acer Aspire 5100 laptop is able to suspend/resume correctly with i386 Ubuntu (Hardy, Intrepid). It *almost* works with Intrepid amd64. However, within a few seconds of resume the screen starts to flicker as if the display signal is out of sync. This gets worse over the course of a minute or so, until the display is essentially unreadable.

This is with the free ATI driver. I tried a few suspend/resume cycles with the non-free driver and it works fine.

Linux imbrium 2.6.27-11-generic #1 SMP Wed Apr 1 20:53:41 UTC 2009 x86_64 GNU/Linux

00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 10)
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:04.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:05.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:12.0 IDE interface: ATI Technologies Inc IXP SB400 Serial ATA Controller (rev 80)
00:13.0 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.1 USB Controller: ATI Technologies Inc IXP SB400 USB Host Controller (rev 80)
00:13.2 USB Controller: ATI Technologies Inc IXP SB400 USB2 Host Controller (rev 80)
00:14.0 SMBus: ATI Technologies Inc IXP SB400 SMBus Controller (rev 83)
00:14.1 IDE interface: ATI Technologies Inc IXP SB400 IDE Controller (rev 80)
00:14.2 Audio device: ATI Technologies Inc IXP SB4x0 High Definition Audio Controller (rev 01)
00:14.3 ISA bridge: ATI Technologies Inc IXP SB400 PCI-ISA Bridge (rev 80)
00:14.4 PCI bridge: ATI Technologies Inc IXP SB400 PCI-PCI Bridge (rev 80)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
01:05.0 VGA compatible controller: ATI Technologies Inc RS482 [Radeon Xpress 200M]
06:01.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ (rev 10)
06:02.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02)
06:04.0 CardBus bridge: ENE Technology Inc CB-712/4 Cardbus Controller (rev 10)
06:04.1 FLASH memory: ENE Technology Inc ENE PCI Memory Stick Card Reader Controller (rev 01)
06:04.2 SD Host controller: ENE Technology Inc ENE PCI Secure Digital Card Reader Controller (rev 01)
06:04.3 FLASH memory: ENE Technology Inc FLASH memory: ENE Technology Inc: (rev 01)
06:04.4 FLASH memory: ENE Technology Inc SD/MMC Card Reader Controller (rev 01)

[Id2ndR (id2ndr)]

Is this bug a duplicate of bug #318325 ?

[Marco_Case (casemarco)]

For anyone interested, I have found a solution for my Acer Aspire 5100 in UBUNTU 11.04 (64bit version)
The flashing screen is caused by the kernel modesetting feature (KMS) that doesn't work good on the ATI radeon xpress 1100 graphic chip, so I disabled this feature by editing the file "/etc/default/grub" and changing the line: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash” to: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash nomodeset”. Then I ran: sudo update-grub. Don't know if this is working for ubuntu versions below 11.04.

For the googlers around here's the sequence:

1) open the terminal and type: gksudo gedit/etc/default/grub
2) find a line that says: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”
3) modify that line this way: GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash nomodeset”
4) save, go back to terminal and type: sudo update-grub
5) reboot your laptop, then try to suspend it and resume, it should work.

Hope this helps someone.

[penalvch (penalvch)]

Chris, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-video-ati REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]