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On 2011-05-01T17:39:47+00:00 Stefan Nagy wrote:

I'm using Ubuntu 11.04 – since I upgraded to Natty Narwhal I see heavy
graphics corruptions in Gnome 2.32.1, the Gnome panel is especially
affected. I'm sure I already saw those corruptions in Ubuntu 10.10 (but
I had the backports activated…). I'm sorry but I can't narrow this
further down…

In addition I'm noticing increasing usage of my swap-partition. I have
4GB swap (don't ask me why) – within a few hours the graphics
corruptions and the swap-usage increases until the whole 4GB are in use
and the system freezes. I'm quite sure those symptoms are related…

I attached two screenshots showing different corruptions on Launchpad:

https://launchpadlibrarian.net/70632490/screenshot_stefan-nagy_01.png
shows a permanent symptom only affecting context menus of the Gnome
panel - in my case the gnome clock applet, the indicator applet and the
applet used to switch between open windows using buttons (in german
called 'Fensterwähler'). I *don't* see those corruptions when I open the
context menus of the menu bar and the netspeed applet.

https://launchpadlibrarian.net/70632558/screenshot_stefan-nagy_02.png
shows a symptom which appears after some time (an hour or more) and
tends to get worse i.e. one Gnome panel part after another is affected.

I'd really appreciate any help with this, please tell me if I can
provide additional information.


Bugreport on Launchpad: 
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/771370

Linux rosa 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:50 UTC 2011
i686 i686 i386 GNU/Linux

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon
RV250 [Mobility FireGL 9000] [1002:4c66] (rev 01)

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/0

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On 2011-05-02T01:26:56+00:00 Michel-daenzer wrote:

Please attach the full Xorg.0.log file.

Does

       Option "RenderAccel" "off"

work around any of these problems?

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/1

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On 2011-05-02T10:55:44+00:00 Stefan Nagy wrote:

Created attachment 46260
Xorg.0.log

Thanks – option "RenderAccel" "off" seems to solve the problem, I tested
this for some hours now and didn't see any corruptions, swap-partition
usage looks normal… I'll let you know if I come across any corruptions
again.

Regarding the problem shown in my first screenshot it seems like it has
nothing to do with my graphics card – see
https://bugs.launchpad.net/ubuntu/+source/light-themes/+bug/751226.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/2

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On 2011-05-16T12:03:59+00:00 Stefan Nagy wrote:

After testing this for 10 days now I have to say that I've seen some
minor corruptions (can't say more about that at this point). But that's
not the main problem… ram- and swap-usage aren't normal at all.

Normal ram-usage is now at 800 MB and this doesn't change so much over
time – but at some point the swap-usage increases without any obvious
reason. When it reaches 60% I usually restart gdm because the
performance sucks… Once or twice in the last 10 days the x-server
crashed – but I didn't observe the ram- and swap-usage… :-/

All in all it's possible to work with option RenderAccel turned off, but
the performance is quite bad at the beginning and gets even worse over
time… so this is no long-term solution.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/3

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On 2011-07-30T06:02:01+00:00 Stefan Nagy wrote:

After several weeks of testing this I have to correct myself. I don't
really see any corruptions anymore & the ram & swap-usage seems to be
quite normal. After all I'm working every day for several hours with
this computer & never had any problems (since my last posting). Sure,
the performance is much worse with option RenderAccel deactivated, but
apart from that everything works fine.

Please tell me if I can help in any way to get this fixed. I'd love to
use my old notebook for at least another decade & the increase in
performance with RenderAccel turned on is just amazing… ;)

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/4

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On 2011-08-10T06:56:29+00:00 Stefan Nagy wrote:

Created attachment 50096
screenshot showing corrupted graphics (option "RenderAccel" is "off")

Sorry, I have to correct myself again (I hope this is the last time).
After writing the last comment I kept an eye on both symptoms (massive
swap-usage, graphic corruptions) and now I can say that both symptoms
are still present with option "RenderAccel" "off" – up to a moderate
extent…

· swap-usage
When RAM-usage reaches around 40%, swap-usage begins to increase continuous. 
For example when I open a window (nautilus, gedit… whatever) swap-usage 
increases, closing windows/programs doesn't have the effect of decreasing 
swap-usage. Even when I change workspaces swap-usage increases. After some 
hours of work I'll log out and in again to empty swap & get the normal 
performance of my system again.

· graphic corruptions
I see some minor corruptions which are quite stable. For example the graphic 
you see in the middle of the screen when you change workspaces in Gnome looks 
crappy quite often and when it started once it will stay like this (I attach 
screenshot 1 showing this corruption). I'll also attach another example, I had 
to close the program to get rid of the corruption (see screenshot 2).

In Summary: option "RenderAccel" "off" doesn't solve any of the problems
I'm having with this graphics card but it extenuates the symptoms to an
extend so I can work with the computer.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/5

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On 2011-08-10T06:57:20+00:00 Stefan Nagy wrote:

Created attachment 50097
2nd screenshot showing corrupted graphics (option "RenderAccel" is "off")

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/6

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On 2011-08-12T19:07:06+00:00 Stefan Nagy wrote:

After I tried out several radeon options I found a better solution than
deactivating Render Acceleration: forcing the card into PCI mode (by
setting AGP mode to -1). Performance is much better, I can see no
corrupted graphics at all & I have no problems with massive RAM & swap
usage.

The performance is inferior to AGP mode 4x, 2x and 1x, but apart from
that it works great.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/7

------------------------------------------------------------------------
On 2011-08-13T07:19:37+00:00 Stefan Nagy wrote:

Could someone please take a look at the screenshots of the original
reporter of Bug 771370 in Launchpad & mine – I suppose although we have
the same graphics chip (with PCI-ID 1002:4c66) we are affected by
different bugs; as far as I can tell the corruptions look quite
different…

Besides I have a question: given the above mentioned workaround (forcing
AGP to PCI mode while render acceleration stays activated) does that
mean that VRAM to AGP transports could be the problem?

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/8

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On 2011-08-13T07:59:17+00:00 agd5f wrote:

AGP is always the problem.  There are too many wonky AGP chipsets out
there.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/9

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On 2011-08-14T14:14:56+00:00 Stefan Nagy wrote:

Thanks for your reply! It seems that in the meantime I've found an even
better way to avoid these symptoms: Option "EXAPixmaps" "off" works
great for me (in AGP Mode 4x) – performance is much better now.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/10

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On 2011-08-21T15:08:11+00:00 Stefan Nagy wrote:

I asked the original reporter of launchpad bug #771370 if he could test
the different radeon options suggested here & it turned out he doesn't
see any corrupted graphics anymore – so it seems he was affected by
another bug.

FYI: My original report on launchpad is bug #766693
https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/766693


Regarding my experiences using Option "EXAPixmaps" "off": It still works great, 
I just saw a minor screen corruption once; ram & swap usage look quite normal – 
but I have to test this over a longer period and report back later.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/11

------------------------------------------------------------------------
On 2011-09-20T03:41:17+00:00 Stefan Nagy wrote:

I tested Debian Stable (Wheezy) for some days & the graphics performance
was just great (without any radeon-options) – the only thing I had to do
was to install the firmware-blob (included in firmware-linux-nonfree).

I didn't see any screen corruptions in Squeeze and the performance was
really incredible – so maybe this is a regression?

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/12

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On 2011-09-28T07:00:22+00:00 Stefan Nagy wrote:

I tested this on Ubuntu 10.10 (maverick) for some time now and couldn't
reproduce this bug anymore, so I closed my original report on Launchpad
and opened a new one (see https://launchpad.net/bugs/860509). The only
bug I'm affected by in Debian 6.0 & Ubuntu 10.10 (Xorg 7.5) with my
graphics hardware is this one: https://launchpad.net/bugs/539163 (same
symptoms as the original reporter).

The bug described here is new in Ubuntu 11.04 (Xorg 7.6). Since I see
screen artifacts not only when I use Compiz but also with Metacity I'm
going to change the title of this report. I decided to keep Ubuntu 11.04
installed for now so I can test this – I'd be glad to help if someone
needs more information on this.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/15

------------------------------------------------------------------------
On 2011-10-10T09:22:21+00:00 Stefan Nagy wrote:

I'm testing this now with xorg packages from the ubuntu xorg-edgers PPA
("Xorg packages fresh from git") & the problem is still present.

BTW: Seems like the corruptions accumulate much faster when I have my
external monitor connected (VGA-0).

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/16

------------------------------------------------------------------------
On 2011-10-20T03:47:36+00:00 Stefan Nagy wrote:

I can't reproduce this bug on Debian Testing (Wheezy) – which really confuses 
me…
-> Xorg 1:7.6+9, xserver-xorg-video-radeon 1:6.14.2-2.

Maybe this information could help to narrow this bug down.


(please note that I *didn't* test this on wheezy before; in comment #12 I just 
mixed up the codenames "Squeeze" and "Wheezy" – sorry for the confusion)

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/17

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On 2013-02-25T20:23:44+00:00 Stefan Nagy wrote:

I tested this on Ubuntu 12.04 now and since I can't reproduce the bug
anymore I'm closing this report. Thanks.

Reply at: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
ati/+bug/860509/comments/19


** Changed in: xserver-xorg-driver-ati
       Status: Confirmed => Invalid

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Title:
  [RV250] Regression: Screen corruptions on X + massive RAM- & Swap-
  usage

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