1002:7942 [Samsung NP-R40FY0E/SEG] Graphical corruption

Bug #1547235 reported by Micha on 2016-02-18
16
This bug affects 2 people
Affects Status Importance Assigned to Milestone
xserver-xorg-driver-ati
Confirmed
High
xserver-xorg-video-ati (Ubuntu)
Medium
Unassigned

Bug Description

Ubuntu has graphical corruptions as per the attachment.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-2-generic 4.4.0-2.16 [modified: boot/vmlinuz-4.4.0-2-generic]
ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
Uname: Linux 4.4.0-2-generic x86_64
ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: m 1199 F.... pulseaudio
CurrentDesktop: Unity
Date: Thu Feb 18 22:40:06 2016
HibernationDevice: RESUME=UUID=1a9cc3e7-ec1c-4f67-95c9-f96d010b2a7a
InstallationDate: Installed on 2016-02-10 (8 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160210)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R40P/R41P
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic root=UUID=860436bf-bd69-4811-8843-9ba08a391b58 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-2-generic N/A
 linux-backports-modules-4.4.0-2-generic N/A
 linux-firmware 1.155
RfKill:
 0: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/18/2007
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 06YE
dmi.board.name: R40P/R41P
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr06YE:bd07/18/2007:svnSAMSUNGELECTRONICSCO.,LTD.:pnR40P/R41P:pvr06YE:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR40P/R41P:rvr:cvnSAMSUNGELECTRONICSCO.,LTD.:ct1:cvrN/A:
dmi.product.name: R40P/R41P
dmi.product.version: 06YE
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
---
.tmp.unity.support.test.0:

ApportVersion: 2.19.4-0ubuntu2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
DistUpgraded: Fresh install
DistroCodename: xenial
DistroRelease: Ubuntu 16.04
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Advanced Micro Devices, Inc. [AMD/ATI] RS600M [Radeon Xpress 1250] [1002:7942] (prog-if 00 [VGA controller])
   Subsystem: Samsung Electronics Co Ltd RS600M [Radeon Xpress 1250] [144d:c036]
InstallationDate: Installed on 2016-02-10 (12 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160210)
MachineType: SAMSUNG ELECTRONICS CO., LTD. R40P/R41P
Package: xorg 1:7.7+13ubuntu1
PackageArchitecture: amd64
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-2-generic root=UUID=860436bf-bd69-4811-8843-9ba08a391b58 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-2.16-generic 4.4.0
Tags: xenial ubuntu compiz-0.9
Uname: Linux 4.4.0-2-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 07/18/2007
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: 06YE
dmi.board.name: R40P/R41P
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 1
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr06YE:bd07/18/2007:svnSAMSUNGELECTRONICSCO.,LTD.:pnR40P/R41P:pvr06YE:rvnSAMSUNGELECTRONICSCO.,LTD.:rnR40P/R41P:rvr:cvnSAMSUNGELECTRONICSCO.,LTD.:ct1:cvrN/A:
dmi.product.name: R40P/R41P
dmi.product.version: 06YE
dmi.sys.vendor: SAMSUNG ELECTRONICS CO., LTD.
version.compiz: compiz 1:0.9.12.2+16.04.20151211-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.66-2
version.libgl1-mesa-dri: libgl1-mesa-dri 11.1.1-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.1.1-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.17.3-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.6.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160127-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1
xserver.bootTime: Mon Feb 22 21:25:02 2016
xserver.configfile: default
xserver.errors: systemd-logind: failed to get session: PID 752 does not belong to any known session
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs: Output LVDS S-video VGA-0
xserver.version: 2:1.17.3-2ubuntu2
xserver.video_driver: radeon

Created attachment 45301
Artifacts under Gnome Shell

gnome-shell from git
clutter-1.6 (git)

kernel-2.6.38.2-11.fc15.x86_64

Mesa versions:

$ rpm -qa | grep mesa
mesa-dri-drivers-dri1-7.11-0.5.20110401.0.fc14.x86_64
mesa-libEGL-7.11-0.5.20110401.0.fc14.x86_64
mesa-dri-llvmcore-7.11-0.5.20110401.0.fc14.x86_64
mesa-libEGL-devel-7.11-0.5.20110401.0.fc14.x86_64
mesa-dri-drivers-7.11-0.5.20110401.0.fc14.x86_64
mesa-libOSMesa-devel-7.11-0.5.20110401.0.fc14.x86_64
mesa-libOSMesa-7.11-0.5.20110401.0.fc14.x86_64
mesa-libGLU-devel-7.11-0.5.20110401.0.fc14.x86_64
mesa-dri-filesystem-7.11-0.5.20110401.0.fc14.x86_64
mesa-libGLES-devel-7.11-0.5.20110401.0.fc14.x86_64
mesa-libGL-7.11-0.5.20110401.0.fc14.x86_64
mesa-libGL-devel-7.11-0.5.20110401.0.fc14.x86_64
mesa-libGLU-7.11-0.5.20110401.0.fc14.x86_64
mesa-libGLES-7.11-0.5.20110401.0.fc14.x86_64

$ lspci

01:05.0 VGA compatible controller: ATI Technologies Inc Radeon Xpress 1250

Are you using r300c or r300g? Please attach the output of glxinfo.

Created attachment 45316
glxinfo

You are using the gallium driver.

Created attachment 45494
glxinfo output

Same happens to me, lspci output is:
01:05.0 VGA compatible controller: ATI Technologies Inc Radeon Xpress 1250

hardware is Dell Latitude XT.

Same artifacts here. x1250 (Gallium-Driver) on Samsung R60

Looks like this font issue can be triggered (at least for me) by http://wiki.clutter-project.org/wiki/File:COGLBasicsExample.zip , so the problem might be clutter/cogl-related. Also, relationship with 'font glitches' from https://bugs.freedesktop.org/show_bug.cgi?id=29139 is possible.

It looks like only the very thin characters misrender.

Unfortunately, I don't have RS600.

(In reply to comment #7)
> It looks like only the very thin characters misrender.

  I'm not sure whether this is width-related; I see misrenderd also 'S', 'v', '2', and some others, and I believe (but unfortunately I don't have a screenshot) that under some circumstances, the set of affected glyphs changes.

>
> Unfortunately, I don't have RS600.

  If it will be of some use, I can test patches, do some basic debugging, or provide remote access to RS600 machine.

Created attachment 46709
R300 texture alignment partial fix

As Marek stated, this issue is related to texture alignment. After playing with mesa/src/gallium/drivers/r300/r300_texture_desc.c (see attached patch), I was able to get things rendering properly -- font issue disappeared with setting 'height' alignment of 8bpp textures to '2' and misrendered artifacts on some round edges with 32bpp textures and 'height' alignment to 2. Patch contains only values I needed to fix -- I guess there is some relation between parts of array I've been modifying.

Unfortunately, this patch causes, that some (random) of GNOME 3's popup windows are being rendered improperly -- their content looks like portions of other textures (e.g. desktop background, icons, ...; random parts of vram), with no apparent relation to expected content.

RS600/RS690/RS740 require 64 bit texture pitch alignment, perhaps the tile alignment needs some adjustment as well.

I'm sorry, I was talking about tile alignment whole time, the modified function was r300_get_pixel_alignment, which definitely returns "tile" . Sorry for confusion.

After more thorough testing, it seems that r300 driver is not able to correctly create surfaces of certain dimensions; random vram content is shown instead. Also, it doesn't seem to change, despite of application changing contents of its window. I tried some more changes in the alignment table (like multiplying related alignments by two), but it had only negative effect.

Created attachment 46752
little experiment

(In reply to comment #13)
> After more thorough testing, it seems that r300 driver is not able to correctly
> create surfaces of certain dimensions; random vram content is shown instead.

Not true. The r300 driver gets it right for all the other GPUs, it's just rs6xx that is broken.

Please try the attached patch.

(In reply to comment #14)
> Created an attachment (id=46752) [details]
> little experiment
>
> (In reply to comment #13)
> > After more thorough testing, it seems that r300 driver is not able to correctly
> > create surfaces of certain dimensions; random vram content is shown instead.
>
> Not true. The r300 driver gets it right for all the other GPUs, it's just rs6xx
> that is broken.

  Sorry, I was generalizing too much; for me it's always in rs600 context.

>
> Please try the attached patch.

I tried this patch; unfortunately it just reverted the old behavior -- problem with certain surface sizes was gone, but problem with texture alignment returned for both 8bpp and 32bpp textures. I did not notice any other differences.

  If you will have any other ideas/patches, I'll gladly test them; but I can't do much here by myself.

Nope, I've run out of ideas and I don't have the GPU.

(Milan, are you near Brno by any chance?)

(In reply to comment #16)
> Nope, I've run out of ideas and I don't have the GPU.
>
> (Milan, are you near Brno by any chance?)

I'll contact you by e-mail and we'll see whether we can arrange a meeting.

so any idea?

After testing r300g driver (both with and withoug alignment fix) with different values for ColorTiling option, the results seems to be unaffected -- no matter whether the ColorTiling is enabled or disabled, I still get the original behavior (only affected by patch to alignment table).

The ColorTiling option only affects the buffers allocated by the DDX, which is usually just the window framebuffer. The textures and private framebuffers allocated by r300g are usually tiled regardless of the ColorTiling option.

Setting this environment variable disables tiling in r300g:

RADEON_DEBUG=notiling

It must be set such that the Gnome Shell can see it, of course.

(In reply to comment #20)
> Setting this environment variable disables tiling in r300g:
>
> RADEON_DEBUG=notiling
>
> It must be set such that the Gnome Shell can see it, of course.

  I tested gnome-shell with it; when using alignment table patches (Xorg's ColorTiling was always false), there was no change. However, when I reverted to original r300_texture_desc.c, things seem to work more-or-less correctly -- 8bpp textures seem to render fine (there's one case when I'm not sure), however, small 32bpp textures still render incorrectly.

(In reply to comment #21)
> I tested gnome-shell with it; when using alignment table patches (Xorg's
> ColorTiling was always false), there was no change. However, when I reverted to
> original r300_texture_desc.c, things seem to work more-or-less correctly --
> 8bpp textures seem to render fine (there's one case when I'm not sure),
> however, small 32bpp textures still render incorrectly.

UPDATE: looks like some fonts are not rendered properly either, but I can't justify whether they are rendered into 8bpp or 32bpp textures.

Is it still a issue with current mesa and kernel ?

From the image it seems like the same rendering issue I am having:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/751828

My graphics card is ATI Radeon Xpress 1250

$ glxinfo | grep -i opengl
OpenGL vendor string: X.Org R300 Project
OpenGL renderer string: Gallium 0.4 on ATI RS600
OpenGL version string: 2.1 Mesa 9.1.1
OpenGL shading language version string: 1.20

Created attachment 78575
Same(?) text rendering issues as original reporter had

Affects me as well, OpenSuse 12.3 - Tumbleweed (kernel 3.7-3.11);
for my report and details (Samsung R60, hardly any different from people here) see http://phoronix.com/forums/showthread.php?89174-Radeon-Gnome-3-AMD-Xpress-1250-%28Samsung-R60%29-Driver-Glitches&p=374780

Also see https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/751828
Affects a LOT of people. :(((

I dump importance to medium-major, because its really distracting as it corrupts whole working area of gnome 3 / gnome shell (time, calender, system control (settings, power options))

With 3.11 kernel one gets a colorful triangle show, screen is tiled into four flashing triangle stips, after 3-4 seconds they vanish, but the font corruption stays same.

This bug might be linked with 35457

Yes, in 35457 in post 37 gnome-shell text corruption is exactly which I experience and is exactly same with screens in this bug. These two are the same critical bug.

This is definite duplicate of 35457 (compare screen attachments)

*** This bug has been marked as a duplicate of bug 35457 ***

This is not a duplicate.

Still experiencing this with kernel 3.17-1 and latest Mesa from Manjaro.

Experiencing it even in Enlightment e17 (version e19) environiment, when hardware OpenGL compositing is selected. If I select software compositing, then this issue disappears.

Also, in KDE 4.14 I get random kernel hardlocks and freezes, I never had. I wonder if this issue is connected.

I have a similar problem

My bug reports on other treckers and full information about my hardware:
https://bugzilla.gnome.org/show_bug.cgi?id=746160
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1434826

Created attachment 119155
Warzone

Every Ubuntu-distro I tried has graphical issues directly after install, see here for example:

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/1434826

Debian also have had problems, also had problems with lot of other distros. Now I am on Mint Mate, where the desktop works - but no games, games have graphical problems and are unusable:

https://bugs.freedesktop.org/show_bug.cgi?id=35457
(scroll down)

I attach some pictures.

Any ideas how to fix? Is it Mesa-related? radeon-driver related? Any ideas?

Some additional infos:

dmesg | grep -i radeon

[ 3.414242] [drm] radeon kernel modesetting enabled.
[ 3.414339] fb: switching to radeondrmfb from EFI VGA
[ 3.415143] radeon 0000:01:05.0: VRAM: 256M 0x0000000070000000 - 0x000000007FFFFFFF (256M used)
[ 3.415146] radeon 0000:01:05.0: GTT: 512M 0x0000000080000000 - 0x000000009FFFFFFF
[ 3.415274] [drm] radeon: 256M of VRAM memory ready
[ 3.415276] [drm] radeon: 512M of GTT memory ready.
[ 3.424768] [drm] radeon: 1 quad pipes, 1 z pipes initialized.
[ 3.426141] radeon 0000:01:05.0: WB enabled
[ 3.426146] radeon 0000:01:05.0: fence driver on ring 0 use gpu addr 0x0000000080000000 and cpu addr 0xffff880035a38000
[ 3.426166] [drm] radeon: irq initialized.
[ 3.426387] [drm] radeon: ring at 0x0000000080001000
[ 3.428091] [drm] radeon atom DIG backlight initialized
[ 3.428096] [drm] Radeon Display Connectors
[ 4.040201] fbcon: radeondrmfb (fb0) is primary device
[ 4.040282] radeon 0000:01:05.0: fb0: radeondrmfb frame buffer device
[ 4.040285] radeon 0000:01:05.0: registered panic notifier
[ 4.044113] [drm] Initialized radeon 2.39.0 20080528 for 0000:01:05.0 on minor 0
------------------------------------------------------------

glxinfo | grep gl

server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle,
    GL_EXT_texture_object, GL_EXT_texture_rectangle, GL_EXT_texture_sRGB,
    GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_NV_vdpau_interop,
------------------------------------------------------------
I changed nomodeset at startup with shift, e - but it resulted
in complete garbage - the splash-screen where I normally enter my password
was completely defect, b/w and absolutely unusable.

I furthermore created xorg.conf, edited it with nano at the right place and changed the line with 'Option "EXAPixmaps"' to "off", afther that it started nomal - but thats all, its also unusable. Screen corrupts in a way I've never seen before, parts were rotated completely, looked crazy. But that was not what I looked for :D
------------------------------------------------------------

Link
https://bugs.freedesktop.org/attachment.cgi?id=112436
https://bugs.freedesktop.org/attachment.cgi?id=112437

*** Bug 89686 has been marked as a duplicate of this bug. ***

I also have affected system and wanted for ages to see it fixed (with or without my help). unfortunately, even if I still can try and load old linux distro where last working fglrx (proprietary driver) was working - I have no idea what to do next - even mmiotrace format apparently changed from 2.6.29 kernel era, and here i fear some more tracing will be needed (and tools for userspace tracing also appear to bitrot or not even properly support this GPU).

i tried to appear on #radeon but everyone was busy there (I think this situation will continue more or less due to new bug flow, new hardware, new features, other users and developers also wanting various levels of help). may be setting special 'hackday' for this or other specific bugs will help? if you like the idea - please reply (I tend to read dri-devel and mesa-dev ML).

Thanks in advance!

Created attachment 121662
chromium BSU also show this bug

using r300g driver from OpenGL version string: 2.1 Mesa 11.1.0-devel (git-8ae8fec), on kernel 4.2.0.

Created attachment 121663
dmesg

as you can see this happens also on 32-bit kernel/32 bit userspace

Micha (m-st-w) wrote :

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed

Micha, thank you for reporting this and helping make Ubuntu better.

Could you please provide the full computer model as noted on the sticker of the computer itself (not from the Bug Description)?

description: updated
affects: linux (Ubuntu) → xorg (Ubuntu)
Changed in xorg (Ubuntu):
importance: Undecided → Low
status: Confirmed → Incomplete
Micha (m-st-w) wrote :

Sticker says

Model: NP-R40 plus
Model: NP-R40FY0E/SEG

Micha (m-st-w) wrote :

Still interested in more information what you´re doing here - for what is a new report by me better than simply writing in the existing report - with exactly the same issue - since 2011...

Btw, why do you report marked this as incomplete? What is now still missing?

Whats going on here feels like "be quiet until we can say that the problem or driver is expired and noone should know what we are (not) doing here" ...

ShinobiTeno (lct-mail) wrote :

Not 2011, earlier.
I still have Samsung R60plus, which will be sold this month. I don't know who this poor person will be.

Basically, you can't do any 3D with it. The memory gets corrupted resulting in lines and trash on the screen.
This includes any compositing.

If you live in Europe, I can sell you the laptop for €70+shipping or look at ebay.
Everyone has basically given up.

Further links:
1) https://bugs.freedesktop.org/show_bug.cgi?id=35998
2) https://bugs.freedesktop.org/show_bug.cgi?id=35457

Micha (m-st-w) wrote :

Yes, I know, it´s impossible to play any game since this damn driver-situation changed.

And I am about to sell this (still great) laptop, too...but this could be no solution. What will happen is, that the poor buyers sitting in 4 weeks here, where we are now.

However, I am getting more and more tired with this shit-situation...and that bugreports here ´expire´ (even if the problems are still exist) or someone again and again setting reports to ´incomplete´ does not make this feeling better -

so please Mr Penalver, tell me why you set this to ´incomplete´ again and what information is missing, that I can give them to you asap

Micha:
>"Sticker says Model: NP-R40 plus Model: NP-R40FY0E/SEG"

What country was this originally from?

Changed in xorg (Ubuntu):
importance: Low → Medium
Micha (m-st-w) wrote :

It was bought in germany

Micha (m-st-w) wrote :

+ I made some changes (new cpu, more+faster ram and another hd) - but I think they have not much to do with the graphic.

tags: added: latest-bios-06ye
summary: - x1250 rs600m graphical corruption
+ 1002:7942 [Samsung NP-R40FY0E/SEG] Graphical corruption

Micha, given the package has been switched, could you please run the following command once from a terminal by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional, relevant debugging information:
apport-collect -p xorg 1547235

Created attachment 121870
mmiotrace from Catalyst 9.3 kernel 2.6.27.27

apport information

tags: added: apport-collected compiz-0.9 ubuntu
description: updated

apport information

Micha (m-st-w) wrote : DpkgLog.txt

apport information

apport information

apport information

apport information

apport information

Micha (m-st-w) wrote : Lspci.txt

apport information

Micha (m-st-w) wrote : Lsusb.txt

apport information

apport information

apport information

apport information

apport information

Micha (m-st-w) wrote : UdevDb.txt

apport information

apport information

Micha (m-st-w) wrote : XorgLog.txt

apport information

apport information

Micha (m-st-w) wrote : Xrandr.txt

apport information

Micha (m-st-w) wrote : xdpyinfo.txt

apport information

apport information

Micha (m-st-w) wrote :

Ups, I pressed 'yes if it is not too technical'...I hope that was enough, if not tell me pls if i should run it again with 'yes'.

Micha, the issue you are reporting is an upstream one. Could you please report this problem via https://bugs.freedesktop.org/enter_bug.cgi?product=xorg&component=Driver/Radeon (not make comments on preexisting bug reports)?

Please provide a direct URL to your bug report once you have made it so that it may be tracked.

Thank you for your understanding.

affects: xorg (Ubuntu) → xserver-xorg-video-ati (Ubuntu)
Changed in xserver-xorg-video-ati (Ubuntu):
status: Incomplete → Triaged
Micha (m-st-w) wrote :

Sorry, but I understand almost nothing here!!

There already is a report there by me, is that enough? If not, what is wrong, what is missing?

https://bugs.freedesktop.org/show_bug.cgi?id=92651

or this from 2011 from another user (same chaos as here):
https://bugs.freedesktop.org/show_bug.cgi?id=35457

*** This bug has been marked as a duplicate of bug 35998 ***

*** Bug 92651 has been marked as a duplicate of this bug. ***

Changed in xserver-xorg-driver-ati:
importance: Unknown → High
status: Unknown → Invalid
Micha (m-st-w) wrote :

Same fun as here...^^ : What has this problem to do with Python or Zope?!?

Why should this be a duplicate of https://bugs.launchpad.net/ubuntu/+source/zope2.8/+bug/35998 ?

Does Alexdeucher receive this post here - or do I need to post this question there?

Micha, Launchpad has a limitation here as it's referring to an upstream URL, not a URL on Launchpad.

Changed in xserver-xorg-driver-ati:
importance: High → Unknown
status: Invalid → Unknown
Changed in xserver-xorg-driver-ati:
importance: Unknown → High
status: Unknown → Confirmed

Created attachment 122015
chromium BSU log with RADEON_DEBUG=texalloc

unfortunately, running with RADEON_DEBUG=notiling gives no visible improvements.

Created attachment 122016
chromium BSU debug log with RADEON_DEBUG=texalloc,notiling

(In reply to Andrew Randrianasulu from comment #38)
> unfortunately, running with RADEON_DEBUG=notiling gives no visible
> improvements.

You have to disable tiling in the ddx as well in the device section of you xorg config:
Option "ColorTiling" "false"

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