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[Bug 641027] [NEW] Screen flickers after 2.6.32-24.42 update (drm/i915 changes)


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The display flickers several times per minute after the 2.6.32-24.42
kernel update. This is extremely tirying for the user.

linux (2.6.32-24.42) lucid-proposed; urgency=low

  [ Upstream Kernel Changes ]

  * (pre-stable) drm/i915: add PANEL_UNLOCK_REGS definition
    - LP: #561802, #578673
  * (pre-stable) drm/i915: make sure eDP panel is turned on
    - LP: #578673
  * (pre-stable) drm/i915: make sure we shut off the panel in eDP configs
    - LP: #578673

These package changes correspond to our hardware, an Intel graphics chipset.

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
	Subsystem: Dell Device 0410
	Flags: bus master, fast devsel, latency 0, IRQ 35
	Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
	Memory at e0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at 60b0 [size=8]
	Capabilities: [90] Message Signalled Interrupts: Mask- 64bit- Queue=0/0 Enable+
	Capabilities: [d0] Power Management version 2
	Capabilities: [a4] PCIe advanced features <?>
	Kernel driver in use: i915
	Kernel modules: i915

I'll try to test with the latest mainline kernel as soon as I get time.

Booting on 2.6.32-23 (still installed) instead makes the problem go



ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-24-generic 2.6.32-24.42
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-24.42-generic
Uname: Linux 2.6.32-24-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
 /dev/snd/controlC0:  maria      1645 F.... xfce4-mixer-plu
                      maria      1653 F.... pulseaudio
                      maria      1691 F.... xfce4-volumed
CRDA: Error: [Errno 2] No such file or directory
 Card hw:0 'Intel'/'HDA Intel at 0xf5460000 irq 22'
   Mixer name	: 'Intel G45 DEVIBX'
   Components	: 'HDA:111d7605,10280410,00100104 HDA:80862804,80860101,00100000'
   Controls      : 22
   Simple ctrls  : 13
Date: Fri Sep 17 06:25:56 2010
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=4a94078b-e73f-4688-a8ab-849aef1171c9
InstallationMedia: Xubuntu 10.04 "Lucid Lynx" - Release i386 (20100429)
MachineType: Dell Inc. Latitude E4310
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-24-generic root=UUID=0174c8f4-9dd1-4825-be0d-497de72aba62 ro quiet splash
RelatedPackageVersions: linux-firmware 1.34.1
SourcePackage: linux
dmi.bios.date: 05/28/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0T6M8G
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA02:bd05/28/2010:svnDellInc.:pnLatitudeE4310:pvr0001:rvnDellInc.:rn0T6M8G:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E4310
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete

** Tags: acpi acpi-bad-address acpi-parse-exec-fail apport-bug bios-outdated-a11 embedded-controller graphics i386 lucid needs-upstream-testing regression-update
Screen flickers after 2.6.32-24.42 update (drm/i915 changes)
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