Bug 27518 - [Clarkdale] Screen constantly shakes
Summary: [Clarkdale] Screen constantly shakes
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: Other Linux (All)
: medium major
Assignee: Carl Worth
QA Contact: Xorg Project Team
URL: https://bugzilla.novell.com/show_bug....
Keywords: NEEDINFO
Depends on:
Reported: 2010-04-07 10:38 UTC by Scott Reeves
Modified: 2010-08-27 00:01 UTC (History)
5 users (show)

See Also:
i915 platform:
i915 features:

xorg log (26.32 KB, text/plain)
2010-04-07 10:38 UTC, Scott Reeves
no flags Details

Description Scott Reeves 2010-04-07 10:38:17 UTC
Created attachment 34772 [details]
xorg log

At boot selection, screen is normal. When I choose default boot the splash screen comes up and looks normal for about half a second, then it flashes and slightly changes color and constantly shakes from then on. Restarting X at the GDM prompt also comes back up shaking. See attached Xorg.0.log

See https://bugzilla.novell.com/show_bug.cgi?id=572102 for detailed history. I have tried booting with a different make of monitor - still shakes.

user1@localhost:~/Downloads> uname -a
Linux localhost #1 SMP 2010-03-29 11:58:05 +0200 i686 i686 i386 GNU/Linux

user1@localhost:~/Downloads> /usr/sbin/hwinfo --gfxcard
08: PCI 02.0: 0300 VGA compatible controller (VGA)              
  [Created at pci.318]
  UDI: /org/freedesktop/Hal/devices/pci_8086_42
  Unique ID: _Znp.VluZtC13qh6
  SysFS ID: /devices/pci0000:00/0000:00:02.0
  SysFS BusID: 0000:00:02.0
  Hardware Class: graphics card
  Model: "Intel Core Processor Integrated Graphics Controller"
  Vendor: pci 0x8086 "Intel Corporation"
  Device: pci 0x0042 "Core Processor Integrated Graphics Controller"
  SubVendor: pci 0x8086 "Intel Corporation"
  SubDevice: pci 0x0042 
  Revision: 0x08
  Driver: "i915"
  Driver Modules: "drm"
  Memory Range: 0xff000000-0xff3fffff (rw,non-prefetchable)
  Memory Range: 0xd0000000-0xdfffffff (rw,prefetchable)
  I/O Ports: 0xf100-0xf107 (rw)
  IRQ: 37 (11973 events)
  I/O Ports: 0x3c0-0x3df (rw)
  Module Alias: "pci:v00008086d00000042sv00008086sd00000042bc03sc00i00"
  Driver Info #0:
    Driver Status: i915 is active
    Driver Activation Cmd: "modprobe i915"
  Config Status: cfg=no, avail=yes, need=no, active=unknown
Primary display adapter: #8
Comment 1 Michael Kreitzer 2010-05-06 11:23:22 UTC
I experience this as well on a GM965. It always happens to the external monitor on my laptop connected via DVI. It happens when KMS is loaded by udev, and I can fix it with a reboot or by changing the video mode with xrandr. This is does not happen all the time. I'd say perhaps 1 out of every 3 or 4 boots.
Comment 2 Chris Wilson 2010-07-14 04:28:57 UTC
The shakes are a symptom of an underrun, usually triggered by either FBC or downclocking. Passing the i915.powersave=0 option should disable those paths, and so prevent the shakes. Upgrading to the current kernel should also fix the underruns due to powersaving, and improve modesetting for Clarkdale.
Comment 3 Gordon Jin 2010-08-05 20:12:19 UTC
Can you try kernel 2.6.35 to see if it's fixed?
Comment 4 Scott Reeves 2010-08-26 15:41:49 UTC
(In reply to comment #3)
> Can you try kernel 2.6.35 to see if it's fixed?

Regrettably my box had a hardware meltdown (I think an overheat / fan failure) and I had to replace that motherboard so I no longer have this chipset. If this is thought to be fixed in the newer kernels I am fine with this being marked as closed fixed.
Comment 5 Chris Wilson 2010-08-27 00:01:08 UTC
Sorry to hear about your machine, thankyou for the bug report and the update.

Closing as I think this issue has been fixed, and we're gradually winning the battle against Clarkdale/Arrandale.

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