Bug 552741

Created attachment 381885 [details]
Xorg log

Another reporter mentioned experiencing this on the thread "Testing request: latest F12 xorg-x11-server build" on f-t-l I assumed that he would have filed a bug report at that time since I confirmed it which I guess he never did.. He has Nvidia GeForce 9400 card I've asked testers with Nvidia cards to set there panels to transparent and report back either here or on the Testing highlight thread on -f-t-l which cards they have and if it works or not. ( you wont notice this if the panels are set to solid colours ).

Created attachment 382456 [details]
Bar background corruption

I can reproduce this behaviour in my HP Pavilion dv6448se, with:

AMD Turion(tm) 64 X2 Mobile Technology TL-56 800MHz
nVidia Corporation C51 [Geforce 6150 Go] (rev a2)
nouveau 0.0.15-18.20091105gite1c2efd.fc12

with the latest packages applied from testing (available today):
sudo yum --enablerepo=updates-testing update xorg\* libdrm\* mesa\* plymouth\*

---

Fedora Bugzappers volunteer triage team
https://fedoraproject.org/wiki/BugZappers

I have the same problem on a GeForce 6150. The display corruption mainly happens on icons and background images.  I'll upload a screenshot to the bug report.  

kernel/driver
xorg-x11-drv-nouveau-0.0.15-17.20091105gite1c2efd.fc12.i686
kernel-PAE-2.6.31.9-174.fc12.i686

lspci -v
00:05.0 VGA compatible controller: nVidia Corporation C51PV [GeForce 6150] (rev a2) (prog-if 00 [VGA controller])
	Subsystem: Micro-Star International Co., Ltd. K8NGM2 series
	Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 19
	Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
	Memory at d0000000 (64-bit, prefetchable) [size=256M]
	Memory at fc000000 (64-bit, non-prefetchable) [size=16M]
	Expansion ROM at feae0000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: nouveau
	Kernel modules: nouveau, nvidiafb

Constant errors in dmesg:
[drm] nouveau 0000:00:05.0: PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x0318 Data 0x00001000
[drm] nouveau 0000:00:05.0: PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x031c Data 0x00001000
[drm] nouveau 0000:00:05.0: PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x0320 Data 0x00000001
[drm] nouveau 0000:00:05.0: PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x0324 Data 0x00000101
[drm] nouveau 0000:00:05.0: PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x0328 Data 0x00000000
[drm] nouveau 0000:00:05.0: PFIFO_CACHE_ERROR - Ch 0/0 Mthd 0x0100 Data 0x00000000

Created attachment 383611 [details]
Screenshot of the display corruption

Common issues:
- Wrong font or font color
- Corrupted icons (filled with random noise)
- Corrupted backgrounds (filled with random noise)

Mousing over the icons or refreshing the window usually causes the corruption to disappear.

Clinton, your bug is not the same issue.  Also, please don't post all this in multiple bugs!!  I've already seen this in your original bug report...

(In reply to comment #0)
> Downgraded to xorg-x11-server-Xorg-1.7.3-2 to fix this which makes 1-7.3-3 the
> actual culprit right ;)    

I'm seeing the same issue with a Radeon RS690M, driver "radeon" with KMS. And I found the very same xorg-x11-server-Xorg version is to blame.

The changelog says:
* Thu Dec 17 2009 Dave Airlie <airlied> 1.7.3-3
- backport EXA fixes from master, should fix xfig crashes X server

*** Bug 554976 has been marked as a duplicate of this bug. ***

Changing component to xorg-x11-server, because people with ATI cards (at least Tim Waugh and I) can reproduce it too with the same xorg-x11-server-Xorg versions.

The bug is reported at http://bugs.freedesktop.org/show_bug.cgi?id=26076.
Maarten Maathuis suggested a workaround (http://bugs.freedesktop.org/show_bug.cgi?id=26076#c5) which I applied in this scratch build here:
http://kojipkgs.fedoraproject.org/scratch/michich/task_1934138/
It works for me.

*** Bug 555316 has been marked as a duplicate of this bug. ***

*** Bug 555734 has been marked as a duplicate of this bug. ***

*** Bug 557014 has been marked as a duplicate of this bug. ***

*** Bug 557820 has been marked as a duplicate of this bug. ***

xorg-x11-server-1.7.5-2.fc12 has been submitted as an update for Fedora 12.
http://admin.fedoraproject.org/updates/xorg-x11-server-1.7.5-2.fc12

xorg-x11-server-1.7.5-2.fc12 has been pushed to the Fedora 12 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update xorg-x11-server'.  You can provide feedback for this update here: http://admin.fedoraproject.org/updates/F12/FEDORA-2010-2563

Confirmed fixed

Great work everyone...

Fixed here too.

Fixed. Thank you :)

Thank you for letting us know.

xorg-x11-server-1.7.5-2.fc12 has been pushed to the Fedora 12 stable repository.  If problems still persist, please make note of it in this bug report.