[RS780] Artefact in launcher tooltip and icons (short cyan vertical bars)

[Tan Kah Ping]

Binary package hint: unity

There's some rendering artefacts in a tooltip. Specifically, it happens to File Manager. All other panel items didn't exhibit this behaviour.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: unity 3.2.2-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
Uname: Linux 2.6.37-7-generic i686
Architecture: i386
CompizPlugins: No value set for `/apps/compiz/general/allscreens/options/active_plugins'
Date: Fri Dec 3 23:07:53 2010
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
LiveMediaBuild_: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20101202)
MachineType: ECS A780GM-A
PciDisplay: 01:05.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon HD 3200 Graphics [1002:9610] (prog-if 00 [VGA controller])
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: noprompt cdrom-detect/try-usb=true persistent file=/cdrom/preseed/hostname.seed boot=casper initrd=/casper/initrd.lz quiet splash --
ProcVersionSignature_: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
RelatedPackageVersions:
 xserver-xorg 1:7.5+6ubuntu3b1
 libgl1-mesa-glx 7.9+repack-1ubuntu3
 libdrm2 2.4.22-2ubuntu1
 xserver-xorg-video-intel 2:2.13.901-2ubuntu1
 xserver-xorg-video-ati 1:6.13.2-1ubuntu2
SourcePackage: unity
XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf'
dmi.bios.date: 11/23/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080014
dmi.board.name: A780GM-A
dmi.board.vendor: ECS
dmi.board.version: 1.0
dmi.chassis.type: 3
dmi.chassis.vendor: ECS
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd11/23/2009:svnECS:pnA780GM-A:pvr1.0:rvnECS:rnA780GM-A:rvr1.0:cvnECS:ct3:cvr:
dmi.product.name: A780GM-A
dmi.product.version: 1.0
dmi.sys.vendor: ECS
glxinfo: Error: [Errno 2] No such file or directory
system: distro = Ubuntu, architecture = i686, kernel = 2.6.37-7-generic

[Didier Roche-Tolomelli (didrocks)]

Thanks for your bug report and help to make ubuntu better.
it seems to be related to your graphic card, triaging it.

Note: the image is attached as https://bugs.launchpad.net/unity/+bug/684992/+attachment/1754700/+files/Screenshot.png

[Jason Smith (jassmith)]

looks like your video card had a memory error. Can you reproduce it reliably?

[Tan Kah Ping (kahping)]

I think you're right. It does seem to be some sort of video memory corruption. It doesn't happen immediately on boot but after about half an hour after I've run some applications. Happens to a different tooltip everytime, but once it happens that tooltip's stuck with the artefact until reboot. So I guess it does happen reliably

Strangely, it only happens to the tooltips (so far). Also, desktop effects in Maverick doesn't give any such artefact (that I noticed)

[Jay Taoko (jaytaoko)]

It reminds me of another bug: #681915
However in this case the issue seems to be less pervasive. I will try to reproduce with and ATI 3450 and the open source driver.

[Didier Roche-Tolomelli (didrocks)]

I'm removing the [ATI] tag seems people are getting some similar issues on icons with intel (see bug #685132)

[Jay Taoko (jaytaoko)]

I can reproduce the issue on an ATI 3450 with Natty (open source driver). Will investigate further...

[Bryce Harrington (bryce)]

Forwarding this bug from Ubuntu reporter Jay Taoko:
http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/715405

[Problem]
Rendering corruption is seen in tooltips (see screenshots). This was reported by a user and reproduced by Jay who is one of the Unity/Compiz developers.

[Original Description]
Some lines appears above the tooltip when running Unity on an ATI gpu with the open source driver. It does not happen with other GPU. The problem is random and shows up on a few of the tooltips only.
To reproduce, move the mouse over the launcher icons (to bring up the tooltips) for a little while. It is best if you have many icons in the launcher. Shortly after, some tooltips will exhibit the problem.

DistroRelease: Ubuntu 11.04
Package: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu4
ProcVersionSignature: Ubuntu 2.6.38-2.29-generic-pae 2.6.38-rc3
Uname: Linux 2.6.38-2-generic-pae i686
Architecture: i386
CompositorRunning: compiz
DRM.card0.DIN.1:
 status: disconnected
 enabled: disabled
 dpms: On
 modes:
 edid-base64:
Date: Tue Feb 8 15:39:11 2011
DistUpgraded: Yes, recently upgraded Log time: 2011-01-28 11:00:32.139757
DistroCodename: natty
DistroVariant: ubuntu
GraphicsCard: Subsystem: PC Partner Limited Radeon HD 4670 512MB DDR3 [174b:e880]
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
MachineType: System manufacturer System Product Name
ProcEnviron:
 LANGUAGE=en_CA:en
 LANG=en_CA.UTF-8
 LC_MESSAGES=en_CA.utf8ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-2-generic-pae root=UUID=96c603fd-a46b-4516-ac34-28d1de74227b ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-ati
dmi.bios.date: 11/18/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0701
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8P67 PRO
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0701:bd11/18/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8P67PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
version.compiz: compiz 1:0.9.2.1+glibmainloop4-0ubuntu9
version.libdrm2: libdrm2 2.4.23-1ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10-1ubuntu1
version.xserver-xorg: xserver-xorg 1:7.6~3ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.13.2+git20110124.fadee040-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-1ubuntu6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu4

[Bryce Harrington (bryce)]

Created attachment 43128
XorgLog.txt

[Bryce Harrington (bryce)]

Created attachment 43129
glxinfo.txt

[Bryce Harrington (bryce)]

Created attachment 43130
BootDmesg.txt

[Bryce Harrington (bryce)]

Created attachment 43131
CurrentDmesg.txt

[Bryce Harrington (bryce)]

Created attachment 43132
Screenshot.png

[Bryce Harrington (bryce)]

For reference, the following bug was the original user report of the issue:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/684992

"It doesn't happen immediately on boot but after about half an hour after I've run some applications. Happens to a different tooltip everytime, but once it happens that tooltip's stuck with the artefact until reboot."

[Jay Taoko (jaytaoko)]

This is a driver bug. It will be reported to the radeon driver team.

[Bryce Harrington (bryce)]

Jay pointed me at this, and yeah this looks like a common -ati rendering issue, and is almost certainly a driver bug.

It is interesting that #685132 shows a similar error on -intel, but I've a feeling these two bugs are distinct (much of the rendering code is driver-specific). Even if they ultimately do share the same root cause, we may find it beneficial to treat them as independent driver bugs, until it is clearer where the fault is, just in case.

Can someone who reproduces this bug please run 'apport-collect 684992' to give us a set of X log files we can forward upstream?

[Bryce Harrington (bryce)]

Thanks; Jay's dupe bug provides the needed information.

[Bryce Harrington (bryce)]

I've forwarded Jay's bug upstream to http://bugs.freedesktop.org/show_bug.cgi?id=34051 - please subscribe to this bug, in case they need further information or wish you to test something.

[Michel Dänzer (michel-daenzer)]

(In reply to comment #6)
> "[...] Happens to a different tooltip everytime, but once it happens that
> tooltip's stuck with the artefact until reboot."

So Unity caches the tooltip images?

Does this also happen with the r600g driver?

[Jay Taoko (jaytaoko)]

I want to add that I have seen a similar bug in Firefox 4.0 (beta 10) while running the classic gnome desktop. See the attached screenshot. When I move the mouse over the forward button, the tooltip shows up and exhibit the same problem. The forward button itself also features 2 vertical parallel lines.

[Jay Taoko (jaytaoko)]

Created attachment 43161
Firefox tooltip bug

[Bryce Harrington (bryce)]

Btw, Jay mentioned to me that he does still have this issue with current Ubuntu (which *should* be r600g unless Jay has specifically configured his system otherwise).

Jay, can you please post your current dmesg, Xorg.0.log, and screenshot of this tooltip corruption issue?

(Fwiw, I'm not able to reproduce this corruption with unity on RV770)

[Jay Taoko (jaytaoko)]

Created attachment 45772
Rendering artifact in Unity Dash

[Jay Taoko (jaytaoko)]

Created attachment 45773
dmesg.txt

[Jay Taoko (jaytaoko)]

Created attachment 45774
Xorg.0.log

[Jay Taoko (jaytaoko)]

Created attachment 45775
glxinfo.txt

[Jay Taoko (jaytaoko)]

I added a more recent snapshot of the bug in the Unity Dash.

[Bryce Harrington (bryce)]

[I've marked this bug for inclusion in our oneiric bug queue. While technically this bug has not been re-confirmed against oneiric, I feel it is worth continued development attention. We will need to ask that it be re-confirmed once oneiric is further along, perhaps once we get closer to alpha.]

[Bryce Harrington (bryce)]

Any suggestions on how we could go about further diagnosing this problem, or any branches/patches we should try testing?

[agd5f (agd5f)]

(In reply to comment #16)
> Any suggestions on how we could go about further diagnosing this problem, or
> any branches/patches we should try testing?

Keep trying newer versions of r600g and the kernel. Ideally you could find a small test that can reliably reproduce the problem. You might also try enabling tiling:
Option "ColorTiling" "Enable"
in the device section of your xorg.conf

[Bryce Harrington (bryce)]

Hi Tan Kan,

Can you please re-confirm this bug still affects oneiric?

There have been several other -ati artifact bugs that users are reporting they saw on natty but don't happen with oneiric so it'd be reasonable to guess this one got fixed as well.

[Tan Kah Ping (kahping)]

Ran with today's daily image for about 40 minutes. Looks good. No artefacts appeared.

Looks like this is indeed fixed.

[xapantu (xapantu)]

Hum, I have a ATI HD 2600 XT, and I still have it with the latest updates (see the black lines at the top). It is not fixed here :(

(See this duplicate for my hardware informations: https://bugs.launchpad.net/unity/+bug/684182)

[Glisse (glisse)]

Closing reopen if it's still an issue with 3.2 kernel or newer and 8.0 mesa or newer.