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Message #29809
[Bug 1042613] Re: intel graphics rc6 power saving causes flickering
Giampiero Salvi, as per
http://www.asus.com/Notebooks_Ultrabooks/Eee_PC_1001PX_Seashell/#support
an update is available for your BIOS (1201). If you update to this
following https://help.ubuntu.com/community/BiosUpdate , does it change
anything?
If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.
For more on BIOS updates and linux, please see
https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette
.
Thank you for your understanding.
** Description changed:
Since RC6 power saving was enabled by default, disconnecting the power
- cable causes flickering in the screen. The problem is solved by
- disabling RC6 power saving in the kernel parameters. This is done by
- adding "i915.i915_enable_rc6=0" to the GRUB_CMDLINE_LINUX_DEFAULT
- variable in /etc/default/grub and by running
+ cable causes flickering in the screen.
+ WORKAROUND: Disable RC6 power saving by adding "i915.i915_enable_rc6=0" to the GRUB_CMDLINE_LINUX_DEFAULT variable in /etc/default/grub and by running:
sudo update-grub
-
- I am filing this bug report so that you know the problem exists with this particular hardware configuration:
- Computer: EEE PC 1001PX
- Graphics: Intel Corporation N10 Family Integrated Graphics Controller
- Ubuntu: 12.04, 32 bits
- Kernel: 3.2.0-29-generic-pae
-
- I am using "ubuntu-bug linux" to file the bug, so I assume you have
- already all the relevant information
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-29-generic-pae 3.2.0-29.46
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
Uname: Linux 3.2.0-29-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
- **** List of PLAYBACK Hardware Devices ****
- card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
- Subdevices: 0/1
- Subdevice #0: subdevice #0
+ **** List of PLAYBACK Hardware Devices ****
+ card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
+ Subdevices: 0/1
+ Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
ArecordDevices:
- **** List of CAPTURE Hardware Devices ****
- card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
- Subdevices: 1/1
- Subdevice #0: subdevice #0
+ **** List of CAPTURE Hardware Devices ****
+ card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
+ Subdevices: 1/1
+ Subdevice #0: subdevice #0
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC0: giampi 1689 F.... pulseaudio
- /dev/snd/pcmC0D0p: giampi 1689 F...m pulseaudio
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC0: giampi 1689 F.... pulseaudio
+ /dev/snd/pcmC0D0p: giampi 1689 F...m pulseaudio
Card0.Amixer.info:
- Card hw:0 'Intel'/'HDA Intel at 0xf7cf8000 irq 45'
- Mixer name : 'Realtek ALC269VB'
- Components : 'HDA:10ec0269,10438437,00100100'
- Controls : 13
- Simple ctrls : 8
+ Card hw:0 'Intel'/'HDA Intel at 0xf7cf8000 irq 45'
+ Mixer name : 'Realtek ALC269VB'
+ Components : 'HDA:10ec0269,10438437,00100100'
+ Controls : 13
+ Simple ctrls : 8
Date: Tue Aug 28 09:41:13 2012
HibernationDevice: RESUME=UUID=70fefe68-bbe7-4083-9663-fd32cdb604dc
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: ASUSTeK Computer INC. 1001PX
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic-pae root=UUID=a36ef87b-13ea-4ce2-bac3-ebf4d415e6ef ro quiet splash i915.i915_enable_rc6=0 vt.handoff=7
RelatedPackageVersions:
- linux-restricted-modules-3.2.0-29-generic-pae N/A
- linux-backports-modules-3.2.0-29-generic-pae N/A
- linux-firmware 1.79
+ linux-restricted-modules-3.2.0-29-generic-pae N/A
+ linux-backports-modules-3.2.0-29-generic-pae N/A
+ linux-firmware 1.79
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-05-05 (114 days ago)
dmi.bios.date: 08/12/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0904
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1001PX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0904:bd08/12/2010:svnASUSTeKComputerINC.:pn1001PX:pvrx.x:rvnASUSTeKComputerINC.:rn1001PX:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1001PX
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
** Tags added: bios-outdated-1201
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
--
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https://bugs.launchpad.net/bugs/1042613
Title:
intel graphics rc6 power saving causes flickering
Status in “linux” package in Ubuntu:
Incomplete
Bug description:
Since RC6 power saving was enabled by default, disconnecting the power
cable causes flickering in the screen.
WORKAROUND: Disable RC6 power saving by adding "i915.i915_enable_rc6=0" to the GRUB_CMDLINE_LINUX_DEFAULT variable in /etc/default/grub and by running:
sudo update-grub
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-29-generic-pae 3.2.0-29.46
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic-pae 3.2.24
Uname: Linux 3.2.0-29-generic-pae i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
ApportVersion: 2.0.1-0ubuntu12
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: giampi 1689 F.... pulseaudio
/dev/snd/pcmC0D0p: giampi 1689 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf7cf8000 irq 45'
Mixer name : 'Realtek ALC269VB'
Components : 'HDA:10ec0269,10438437,00100100'
Controls : 13
Simple ctrls : 8
Date: Tue Aug 28 09:41:13 2012
HibernationDevice: RESUME=UUID=70fefe68-bbe7-4083-9663-fd32cdb604dc
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: ASUSTeK Computer INC. 1001PX
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-29-generic-pae root=UUID=a36ef87b-13ea-4ce2-bac3-ebf4d415e6ef ro quiet splash i915.i915_enable_rc6=0 vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.2.0-29-generic-pae N/A
linux-backports-modules-3.2.0-29-generic-pae N/A
linux-firmware 1.79
SourcePackage: linux
UpgradeStatus: Upgraded to precise on 2012-05-05 (114 days ago)
dmi.bios.date: 08/12/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0904
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1001PX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0904:bd08/12/2010:svnASUSTeKComputerINC.:pn1001PX:pvrx.x:rvnASUSTeKComputerINC.:rn1001PX:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1001PX
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
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