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[ShinobiTeno <1049630@xxxxxxxxxxxxxxxxxx>]

Dear Mr. Deutcher, thank you for will and readiness to help in this
problem!!

I am using radeon.gart=1024, it does not help.
Then I upgraded to Tumbleweed (3.11)
Glxinfo reports:

OpenGL vendor string: X.Org R300 Project
OpenGL renderer string: Gallium 0.4 on ATI RS600
OpenGL version string: 2.1 Mesa 9.2.2
OpenGL shading language version string: 1.20

Then I added radeon.dpm=1, there are no information about dpm or
powermanagement what so ever in dmesg (unlike 5850 card that I have). I
suggest dpm is not supported on this chip. Not great deal, but for
example, 5850 is unstable withOUT dpm in 3.11.

Lastly, of course I read all patches and responses from people in these
two bugs, and tested first switching from 256 VGA memory to 128 via BIOS
(only two options), it didn't help.

Then I appended "radeon.vramlimit=64" to grub2 kernel line, updated
grub, rebooted. Nothing changed. I attach the screenshot showing the
issue with gnome-shell corruption and the login triangle issue, that is
even more agressive when system comes out of hibernation.

dmesg | grep -i radeon says:

[    0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-3.11.6-4-desktop root=UUID=29100748-63ff-45a1-8642-b795f20d4aea resume=/dev/disk/by-id/ata-WDC_WD1200BEVS-22UST0_WD-WXC208783969-part2 splash=silent quiet showopts radeon.dpm=1 radeon.gartsize=1024 radeon.vramlimit=64
[    0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-3.11.6-4-desktop root=UUID=29100748-63ff-45a1-8642-b795f20d4aea resume=/dev/disk/by-id/ata-WDC_WD1200BEVS-22UST0_WD-WXC208783969-part2 splash=silent quiet showopts radeon.dpm=1 radeon.gartsize=1024 radeon.vramlimit=64
[    2.276384] [drm] radeon kernel modesetting enabled.
[    2.276584] fb: conflicting fb hw usage radeondrmfb vs EFI VGA - removing generic driver
[    2.279337] radeon 0000:01:05.0: VRAM: 128M 0x0000000078000000 - 0x000000007FFFFFFF (64M used)
[    2.279345] radeon 0000:01:05.0: GTT: 1024M 0x0000000080000000 - 0x00000000BFFFFFFF
[    2.281879] [drm] radeon: 64M of VRAM memory ready
[    2.281885] [drm] radeon: 1024M of GTT memory ready.
[    2.304378] [drm] radeon: 1 quad pipes, 1 z pipes initialized.
[    2.309271] radeon 0000:01:05.0: WB enabled
[    2.309286] radeon 0000:01:05.0: fence driver on ring 0 use gpu addr 0x0000000080000000 and cpu addr 0xffff880036bbe000
[    2.309352] [drm] radeon: irq initialized.
[    2.310247] [drm] radeon: ring at 0x0000000080001000
[    2.312584] [drm] radeon atom DIG backlight initialized
[    2.312592] [drm] Radeon Display Connectors
[    2.902375] fbcon: radeondrmfb (fb0) is primary device
[    3.227074] radeon 0000:01:05.0: fb0: radeondrmfb frame buffer device
[    3.227080] radeon 0000:01:05.0: registered panic notifier
[    3.227124] [drm] Initialized radeon 2.34.0 20080528 for 0000:01:05.0 on minor 0

I will test the patch today.
At your will, I will give you remote login to the notebook for any kind of testing you so desire.

-- 
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https://bugs.launchpad.net/bugs/1049630

Title:
  gnome-shell weird lines

Status in The Linux Kernel:
  Confirmed
Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  In gnome-shell font are corrupted and are present weird lines. I'm
  reffering to Ubuntu 12.04 full installed, and Ubuntu 12.10 gnome remix
  live edition.

  Video card: Ati x1250

  Please check also this link to have a picture
  http://img827.imageshack.us/img827/8899/gnome3.jpg and more detail on
  http://ubuntuforums.org/showthread.php?t=1938251

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