** Description changed:
Binary package hint: xorg
In trying workarounds for bug #507148 I disabled KMS by booting with
radeon.modeset=0. When I logged in compiz was enabled, but opening
applications resulted in garbled parts of the screen. See attached
screenshot.
ProblemType:
I've forwarded this bug upstream to
https://bugs.freedesktop.org/show_bug.cgi?id=27151 and subscribed you to
it.
I'm pretty sure this bug is considered unsolvable upstream, since
they're preferring to move to EXA, but I'm interested in hearing what
they say about it. If this hardware can't be
** Changed in: xserver-xorg-driver-ati
Status: Unknown = Confirmed
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[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
On up to date Lucid as of 2010-03-09, this is still a problem with no
xorg.conf file (X defaults to XAA).
$ cat /proc/version_signature
Ubuntu 2.6.32-16.24-generic
--
[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You received
I forgot to mention, VT switching does not help.
--
[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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ubuntu-bugs mailing
** Tags added: corruption
** Tags added: compiz
--
[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
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ubuntu-bugs mailing
** Changed in: xserver-xorg-video-ati (Ubuntu Lucid)
Importance: Low = Medium
--
[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to
This is still an issue with 2.6.32-14.20-generic and the latest xorg-
edgers drivers. I maintain that this is a higher priority than 'Low'
because this bug will affect people if KMS is blacklisted for the radeon
(as mentioned in my last comment, the only known stable configuration
for the radeon
Is low the correct priority for this? If KMS ends up being blacklisted
for radeon due to bug #507148 it may be very important to also blacklist
compiz, which is the current default. The only known stable
configuration for the radeon as of today is XAA/metacity/RenderAccel
off/no KMS. If the compiz
Verified that with no xorg.conf file it loaded with XAA.
Enabled compiz and adjusted xorg.conf to have (with still using
radeon.modeset=0):
Section Device
Identifier Configured Video Device
#Option RenderAccel off
Option AccelMethod EXA
EndSection
Section Monitor
I should also mention that I verified that X did indeed start with 'EXA'
after doing the above. For giggles, I later disabled compiz and X was
still painfully slow.
--
[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You received this
** Summary changed:
- [lucid] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
+ [XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
--
[XAA] garbled screen with compiz but no KMS on ATI Radeon Mobility 7500
https://bugs.launchpad.net/bugs/513956
You
I'm fairly certain this is the well-known screen corruption with XAA.
Indeed, EXA was made to replace XAA specifically because of bugs like
this.
So the real bug here is why is your system using XAA rather than EXA,
and that I believe is because in certain circumstances EXA has severe
problems,
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