| 2011-07-13 19:14:04 |
Felix Vollmer |
bug |
|
|
added bug |
| 2011-07-19 00:08:38 |
Brad Figg |
linux (Ubuntu): status |
New |
Confirmed |
|
| 2011-09-06 16:54:50 |
papukaija |
bug |
|
|
added subscriber papukaija |
| 2011-09-06 17:15:35 |
papukaija |
summary |
samsung-laptop backlight flickering |
The new (2.6.39+) samsung_laptop kernel module causes serious backlight flickering - makes the desktop unusable |
|
| 2011-09-06 17:20:59 |
papukaija |
tags |
apport-bug i386 oneiric running-unity staging |
apport-bug bitesize hw-specific i386 kernel-graphics oneiric running-unity staging usability |
|
| 2011-09-12 22:11:07 |
Brad Figg |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2011-09-12 22:11:10 |
Brad Figg |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics oneiric running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 oneiric running-unity staging usability |
|
| 2011-09-17 19:35:59 |
Simon Watson |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2011-09-17 20:01:11 |
Brad Figg |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2011-09-17 20:01:14 |
Brad Figg |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 oneiric running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 oneiric running-unity staging usability |
|
| 2011-09-23 08:39:01 |
Felix Vollmer |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2011-09-24 07:32:25 |
Brad Figg |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2011-09-24 07:32:28 |
Brad Figg |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 oneiric running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 oneiric running-unity staging usability |
|
| 2011-09-25 11:14:34 |
Simon Watson |
bug |
|
|
added subscriber Simon Watson |
| 2011-09-26 07:55:06 |
Felix Vollmer |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2011-10-01 15:00:33 |
Fortunato Ventre |
bug |
|
|
added subscriber Fortunato Ventre |
| 2011-10-08 07:32:40 |
Brad Figg |
linux (Ubuntu): status |
Confirmed |
Incomplete |
|
| 2011-10-08 07:32:44 |
Brad Figg |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 oneiric running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 oneiric running-unity staging usability |
|
| 2011-10-11 21:48:42 |
Sergey |
linux (Ubuntu): status |
Incomplete |
Confirmed |
|
| 2011-10-12 09:39:26 |
Felix Vollmer |
attachment added |
|
platform-brightness-quirk-for-samsung-laptop-driver.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2538165/+files/platform-brightness-quirk-for-samsung-laptop-driver.patch |
|
| 2011-10-12 09:40:54 |
Felix Vollmer |
attachment added |
|
platform-samsung_laptop-fix-samsung-brightness-min-max-calculations.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2538166/+files/platform-samsung_laptop-fix-samsung-brightness-min-max-calculations.patch |
|
| 2011-10-12 09:42:35 |
Felix Vollmer |
attachment added |
|
samsung-laptop.ko https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2538168/+files/samsung-laptop.ko |
|
| 2011-10-12 09:51:50 |
Felix Vollmer |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 oneiric running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 oneiric patch running-unity staging usability |
|
| 2011-10-12 10:11:59 |
Felix Vollmer |
attachment added |
|
samsung-n220-backlight-fix.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2538200/+files/samsung-n220-backlight-fix.patch |
|
| 2011-10-12 13:36:59 |
Brendan Donegan |
linux (Ubuntu): importance |
Undecided |
High |
|
| 2011-10-12 14:28:33 |
Joseph Salisbury |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 oneiric patch running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 needs-upstream-testing oneiric patch running-unity staging usability |
|
| 2011-10-12 19:12:19 |
Ubuntu Foundations Team Bug Bot |
bug |
|
|
added subscriber Joseph Salisbury |
| 2011-10-13 08:48:55 |
Felix Vollmer |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 needs-upstream-testing oneiric patch running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 oneiric patch running-unity staging usability |
|
| 2011-10-13 12:46:53 |
Fortunato Ventre |
attachment added |
|
Sometimes, while the function "check_for_stepping_quirk()" does its job by setting the new levels of brightness, the screen starts flashing, and the quirk ends up to be (wrongly) disabled. This happens randomly and seems to be caused by the number of levels checked; increasing this number from 2 to 3, fixes the problem. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2539760/+files/test-3-levels-of-difference-for-brightness-quirk.patch |
|
| 2011-10-13 12:47:14 |
Fortunato Ventre |
attachment added |
|
Sometimes, while the function "check_for_stepping_quirk()" does its job by setting the new levels of brightness, the screen starts flashing, and the quirk ends up to be (wrongly) disabled. This happens randomly and seems to be caused by the number of levels checked; increasing this number from 2 to 3, fixes the problem. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2539761/+files/test-3-levels-of-difference-for-brightness-quirk.patch |
|
| 2011-10-13 12:47:45 |
Fortunato Ventre |
attachment removed |
Sometimes, while the function "check_for_stepping_quirk()" does its job by setting the new levels of brightness, the screen starts flashing, and the quirk ends up to be (wrongly) disabled. This happens randomly and seems to be caused by the number of levels checked; increasing this number from 2 to 3, fixes the problem. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2539760/+files/test-3-levels-of-difference-for-brightness-quirk.patch |
|
|
| 2011-10-13 12:48:07 |
Fortunato Ventre |
attachment removed |
Sometimes, while the function "check_for_stepping_quirk()" does its job by setting the new levels of brightness, the screen starts flashing, and the quirk ends up to be (wrongly) disabled. This happens randomly and seems to be caused by the number of levels checked; increasing this number from 2 to 3, fixes the problem. https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2539761/+files/test-3-levels-of-difference-for-brightness-quirk.patch |
|
|
| 2011-10-13 12:48:50 |
Fortunato Ventre |
attachment added |
|
test-3-levels-of-difference-for-brightness-quirk.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2539762/+files/test-3-levels-of-difference-for-brightness-quirk.patch |
|
| 2011-10-13 12:49:34 |
Fortunato Ventre |
attachment added |
|
check-special-case-when-initial-brightness-is-zero.patch https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2539763/+files/check-special-case-when-initial-brightness-is-zero.patch |
|
| 2011-10-13 15:49:46 |
Joseph Salisbury |
linux (Ubuntu): status |
Confirmed |
Triaged |
|
| 2011-10-17 19:31:20 |
Jon Grossart |
bug |
|
|
added subscriber Jon Grossart |
| 2011-10-19 14:30:52 |
Niko Böckerman |
bug |
|
|
added subscriber Niko Böckerman |
| 2011-10-22 18:27:14 |
mak ersky |
bug |
|
|
added subscriber mak ersky |
| 2011-10-23 18:22:43 |
Chris Rowson |
bug |
|
|
added subscriber Chris Rowson |
| 2011-10-23 23:39:34 |
papukaija |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 oneiric patch running-unity staging usability |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability |
|
| 2011-10-24 18:43:42 |
FriedChicken |
bug |
|
|
added subscriber FriedChicken |
| 2011-10-25 17:26:07 |
Felix Vollmer |
description |
I have a Samsung N220 plus. The backlight of the laptop often starts flickering (switching very fast between 2 brightness levels) when gnome tries to reduce the screen brightness (automatically after some time) to save power. This problem also occurs if you press more and less screen brightness at the same time.
I think it could be a problem with the sabi Bios interaction (samsung-laptop.c), because "linux on my samsung" also had this Problem with theier samsung-backlight module:
http://www.voria.org/forum/viewtopic.php?t=625&p=5148
and they solved it by interfacing the backlight via pci.
I tried to enable debug modus of samsung-laptop module, but I didn't get any more output on error. Dmesg only says (a lot of times):
ACPI: Failed to switch the brightness
I'll provide more informations if needed.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-5-generic 3.0.0-5.6
ProcVersionSignature: Ubuntu 3.0.0-5.6-generic 3.0.0-rc7
Uname: Linux 3.0.0-5-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: flexxxv 1405 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0400000 irq 47'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,144dc072,00100004'
Controls : 14
Simple ctrls : 9
Date: Wed Jul 13 20:56:28 2011
HibernationDevice: RESUME=UUID=9f00b9b2-337b-4462-8157-50d16690f634
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. N150P/N210P/N220P
ProcEnviron:
LANGUAGE=de:en
PATH=(custom, user)
LANG=de_DE.UTF-8
LC_MESSAGES=de_DE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-5-generic root=UUID=1f2007e5-9b44-4cb5-a64a-4c2bf8dbda42 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.0.0-5-generic N/A
linux-backports-modules-3.0.0-5-generic N/A
linux-firmware 1.56
SourcePackage: linux
StagingDrivers: brcmsmac brcmutil
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/30/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 01KY.M008.20100430.RHU
dmi.board.asset.tag: SAMSUNG
dmi.board.name: N150P/N210P/N220P
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr01KY.M008.20100430.RHU:bd04/30/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnN150P/N210P/N220P:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnN150P/N210P/N220P:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: N150P/N210P/N220P
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. |
*** Workaround in #26 ***
(A patched kernel module. Please test)
Original bug report:
I have a Samsung N220 plus. The backlight of the laptop often starts flickering (switching very fast between 2 brightness levels) when gnome tries to reduce the screen brightness (automatically after some time) to save power. This problem also occurs if you press more and less screen brightness at the same time.
I think it could be a problem with the sabi Bios interaction (samsung-laptop.c), because "linux on my samsung" also had this Problem with theier samsung-backlight module:
http://www.voria.org/forum/viewtopic.php?t=625&p=5148
and they solved it by interfacing the backlight via pci.
I tried to enable debug modus of samsung-laptop module, but I didn't get any more output on error. Dmesg only says (a lot of times):
ACPI: Failed to switch the brightness
I'll provide more informations if needed.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-5-generic 3.0.0-5.6
ProcVersionSignature: Ubuntu 3.0.0-5.6-generic 3.0.0-rc7
Uname: Linux 3.0.0-5-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: flexxxv 1405 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0400000 irq 47'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,144dc072,00100004'
Controls : 14
Simple ctrls : 9
Date: Wed Jul 13 20:56:28 2011
HibernationDevice: RESUME=UUID=9f00b9b2-337b-4462-8157-50d16690f634
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. N150P/N210P/N220P
ProcEnviron:
LANGUAGE=de:en
PATH=(custom, user)
LANG=de_DE.UTF-8
LC_MESSAGES=de_DE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-5-generic root=UUID=1f2007e5-9b44-4cb5-a64a-4c2bf8dbda42 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.0.0-5-generic N/A
linux-backports-modules-3.0.0-5-generic N/A
linux-firmware 1.56
SourcePackage: linux
StagingDrivers: brcmsmac brcmutil
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/30/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 01KY.M008.20100430.RHU
dmi.board.asset.tag: SAMSUNG
dmi.board.name: N150P/N210P/N220P
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr01KY.M008.20100430.RHU:bd04/30/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnN150P/N210P/N220P:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnN150P/N210P/N220P:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: N150P/N210P/N220P
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. |
|
| 2011-10-26 06:14:35 |
Vladimir Janowski |
attachment added |
|
lsmod 1.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2573035/+files/lsmod%201.txt |
|
| 2011-10-26 06:15:22 |
Vladimir Janowski |
attachment added |
|
lsmod 2.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2573036/+files/lsmod%202.txt |
|
| 2011-10-28 12:05:00 |
Wessel Dankers |
bug |
|
|
added subscriber Wessel Dankers |
| 2011-10-28 23:42:20 |
Tim Klein |
bug |
|
|
added subscriber Tim Klein |
| 2011-10-30 20:55:51 |
Tauno Tammemäe |
bug |
|
|
added subscriber Tauno Tammemäe |
| 2011-11-05 21:56:30 |
Ola Persson |
bug |
|
|
added subscriber Ola Persson |
| 2011-11-09 12:52:38 |
papukaija |
tags |
apport-bug bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability |
apport-bug backlight bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability |
|
| 2011-11-16 22:43:15 |
Matt Sturgeon |
bug |
|
|
added subscriber Matt Sturgeon |
| 2011-11-27 08:37:34 |
CarloBecchi |
bug |
|
|
added subscriber CarloBecchi |
| 2011-12-01 01:01:24 |
papukaija |
tags |
apport-bug backlight bitesize hw-specific i386 kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability |
|
| 2011-12-01 17:57:57 |
Joseph Salisbury |
removed subscriber Joseph Salisbury |
|
|
|
| 2011-12-01 21:50:58 |
Seth Forshee |
bug |
|
|
added subscriber Seth Forshee |
| 2011-12-02 08:12:01 |
Ubuntu Foundations Team Bug Bot |
bug |
|
|
added subscriber Joseph Salisbury |
| 2011-12-02 15:11:45 |
Seth Forshee |
linux (Ubuntu): status |
Triaged |
Incomplete |
|
| 2011-12-02 15:11:45 |
Seth Forshee |
linux (Ubuntu): assignee |
|
Seth Forshee (sforshee) |
|
| 2011-12-02 20:34:19 |
Felix Vollmer |
attachment added |
|
mypatch.diff https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2616993/+files/mypatch.diff |
|
| 2011-12-02 21:04:59 |
Seth Forshee |
nominated for series |
|
Ubuntu Oneiric |
|
| 2011-12-02 21:05:50 |
Seth Forshee |
linux (Ubuntu): status |
Incomplete |
Fix Released |
|
| 2011-12-02 21:09:15 |
Seth Forshee |
description |
*** Workaround in #26 ***
(A patched kernel module. Please test)
Original bug report:
I have a Samsung N220 plus. The backlight of the laptop often starts flickering (switching very fast between 2 brightness levels) when gnome tries to reduce the screen brightness (automatically after some time) to save power. This problem also occurs if you press more and less screen brightness at the same time.
I think it could be a problem with the sabi Bios interaction (samsung-laptop.c), because "linux on my samsung" also had this Problem with theier samsung-backlight module:
http://www.voria.org/forum/viewtopic.php?t=625&p=5148
and they solved it by interfacing the backlight via pci.
I tried to enable debug modus of samsung-laptop module, but I didn't get any more output on error. Dmesg only says (a lot of times):
ACPI: Failed to switch the brightness
I'll provide more informations if needed.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-5-generic 3.0.0-5.6
ProcVersionSignature: Ubuntu 3.0.0-5.6-generic 3.0.0-rc7
Uname: Linux 3.0.0-5-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: flexxxv 1405 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0400000 irq 47'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,144dc072,00100004'
Controls : 14
Simple ctrls : 9
Date: Wed Jul 13 20:56:28 2011
HibernationDevice: RESUME=UUID=9f00b9b2-337b-4462-8157-50d16690f634
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. N150P/N210P/N220P
ProcEnviron:
LANGUAGE=de:en
PATH=(custom, user)
LANG=de_DE.UTF-8
LC_MESSAGES=de_DE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-5-generic root=UUID=1f2007e5-9b44-4cb5-a64a-4c2bf8dbda42 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.0.0-5-generic N/A
linux-backports-modules-3.0.0-5-generic N/A
linux-firmware 1.56
SourcePackage: linux
StagingDrivers: brcmsmac brcmutil
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/30/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 01KY.M008.20100430.RHU
dmi.board.asset.tag: SAMSUNG
dmi.board.name: N150P/N210P/N220P
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr01KY.M008.20100430.RHU:bd04/30/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnN150P/N210P/N220P:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnN150P/N210P/N220P:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: N150P/N210P/N220P
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. |
== SRU Justification ==
Impact: Many Samsung notebook models require a quirk for adjusting the screen brightness, but on some models the quirk detection fails and the wrong backlight adjustment method is used.
Fix: Upstream cherry pick to fix quirk detection.
Test Case: Verified on LP #810093 on the Samsung N220P.
---
*** Workaround in #26 ***
(A patched kernel module. Please test)
Original bug report:
I have a Samsung N220 plus. The backlight of the laptop often starts flickering (switching very fast between 2 brightness levels) when gnome tries to reduce the screen brightness (automatically after some time) to save power. This problem also occurs if you press more and less screen brightness at the same time.
I think it could be a problem with the sabi Bios interaction (samsung-laptop.c), because "linux on my samsung" also had this Problem with theier samsung-backlight module:
http://www.voria.org/forum/viewtopic.php?t=625&p=5148
and they solved it by interfacing the backlight via pci.
I tried to enable debug modus of samsung-laptop module, but I didn't get any more output on error. Dmesg only says (a lot of times):
ACPI: Failed to switch the brightness
I'll provide more informations if needed.
ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: linux-image-3.0.0-5-generic 3.0.0-5.6
ProcVersionSignature: Ubuntu 3.0.0-5.6-generic 3.0.0-rc7
Uname: Linux 3.0.0-5-generic i686
NonfreeKernelModules: wl
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: flexxxv 1405 F.... pulseaudio
CRDA: Error: [Errno 2] Datei oder Verzeichnis nicht gefunden
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf0400000 irq 47'
Mixer name : 'Realtek ALC269'
Components : 'HDA:10ec0269,144dc072,00100004'
Controls : 14
Simple ctrls : 9
Date: Wed Jul 13 20:56:28 2011
HibernationDevice: RESUME=UUID=9f00b9b2-337b-4462-8157-50d16690f634
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110705.1)
MachineType: SAMSUNG ELECTRONICS CO., LTD. N150P/N210P/N220P
ProcEnviron:
LANGUAGE=de:en
PATH=(custom, user)
LANG=de_DE.UTF-8
LC_MESSAGES=de_DE.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-5-generic root=UUID=1f2007e5-9b44-4cb5-a64a-4c2bf8dbda42 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.0.0-5-generic N/A
linux-backports-modules-3.0.0-5-generic N/A
linux-firmware 1.56
SourcePackage: linux
StagingDrivers: brcmsmac brcmutil
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/30/2010
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: 01KY.M008.20100430.RHU
dmi.board.asset.tag: SAMSUNG
dmi.board.name: N150P/N210P/N220P
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvr01KY.M008.20100430.RHU:bd04/30/2010:svnSAMSUNGELECTRONICSCO.,LTD.:pnN150P/N210P/N220P:pvrNotApplicable:rvnSAMSUNGELECTRONICSCO.,LTD.:rnN150P/N210P/N220P:rvrNotApplicable:cvnSAMSUNGELECTRONICSCO.,LTD.:ct10:cvrN/A:
dmi.product.name: N150P/N210P/N220P
dmi.product.version: Not Applicable
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD. |
|
| 2011-12-09 18:06:48 |
Joseph Salisbury |
removed subscriber Joseph Salisbury |
|
|
|
| 2011-12-14 12:07:14 |
Herton R. Krzesinski |
bug task added |
|
linux (Ubuntu Oneiric) |
|
| 2011-12-14 12:07:24 |
Herton R. Krzesinski |
linux (Ubuntu Oneiric): status |
New |
Fix Committed |
|
| 2011-12-14 12:07:30 |
Herton R. Krzesinski |
linux (Ubuntu Oneiric): importance |
Undecided |
High |
|
| 2011-12-14 12:07:42 |
Herton R. Krzesinski |
linux (Ubuntu Oneiric): assignee |
|
Seth Forshee (sforshee) |
|
| 2011-12-14 12:09:00 |
Herton R. Krzesinski |
tags |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-needed-oneiric |
|
| 2011-12-14 13:47:00 |
Felix Vollmer |
tags |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-needed-oneiric |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-done-oneiric |
|
| 2011-12-19 15:07:26 |
Launchpad Janitor |
branch linked |
|
lp:ubuntu/oneiric-proposed/linux-ti-omap4 |
|
| 2011-12-28 13:52:52 |
ImMortallity |
bug |
|
|
added subscriber ImMortallity |
| 2012-01-07 18:35:30 |
Aaron Spettl |
bug |
|
|
added subscriber Aaron Spettl |
| 2012-01-07 18:35:38 |
Aaron Spettl |
removed subscriber Aaron Spettl |
|
|
|
| 2012-01-10 19:38:57 |
papukaija |
tags |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-done-oneiric |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-failed-oneiric |
|
| 2012-01-10 21:36:50 |
Aaron Spettl |
bug |
|
|
added subscriber Aaron Spettl |
| 2012-01-10 21:37:02 |
Aaron Spettl |
removed subscriber Aaron Spettl |
|
|
|
| 2012-01-12 16:31:57 |
papukaija |
attachment added |
|
dmesg.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2669930/+files/dmesg.txt |
|
| 2012-01-12 16:33:34 |
papukaija |
attachment added |
|
lsmod.txt https://bugs.launchpad.net/ubuntu/+source/linux/+bug/810093/+attachment/2669931/+files/lsmod.txt |
|
| 2012-01-20 09:15:47 |
Launchpad Janitor |
linux (Ubuntu Oneiric): status |
Fix Committed |
Fix Released |
|
| 2012-01-20 09:15:47 |
Launchpad Janitor |
cve linked |
|
2011-2203 |
|
| 2012-01-20 09:15:47 |
Launchpad Janitor |
cve linked |
|
2011-4077 |
|
| 2012-01-20 09:15:47 |
Launchpad Janitor |
cve linked |
|
2011-4132 |
|
| 2012-01-20 14:39:16 |
papukaija |
tags |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-failed-oneiric |
apport-bug backlight bitesize hw-specific i386 kernel-bug-exists-upstream kernel-graphics kernel-request-3.0.0-11.17 kernel-request-3.0.0-11.18 kernel-request-3.0.0-12.19 kernel-request-3.0.0-12.20 metabug oneiric patch regression-release running-unity staging usability verification-failed verification-failed-oneiric |
|
