Ubuntu
linux-restricted-modules-2.6.24 package

opengl 3D applications make screen blink with ati radeon video card: Probable cause is Visual Effects Enhacement

Bug #223409 reported by Denis Mauá on 2008-04-28

This bug report is a duplicate of: Bug #179042: Videos tear and "blink" when enabling compiz [AMD Feature #7647] [EPR#257833]. Edit Remove

Affects		Status	Importance	Assigned to	Milestone
	linux-restricted-modules-2.6.24 (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

After I've upgraded to Ubuntu Hardy 8.04, screen happens to blink from time to time when running applications using opengl to support 3D features.
I'm working on a amd64 platform with 1GB RAM and a ati radeon 9600 video card.
When I turn off the visual effects enhacement, things get back to normal (i.e. it stops blinking).
I have actually only noticed the issue when running games, because that's the only app I think I have here that requires opengl 3D features (but fglxgears app also suffer from this problem).

I'm using the third party driver from ati, used by default when enabling 3D features on Ubuntu.

What can I do?

Revision history for this message

Ілля Романенко (ilyaromanenko) wrote on 2008-04-28:

I have the same problem :(
note: with mesa driver's all fine but FPS is less than with third party driver from ati

Revision history for this message

Stefano Maioli (smaioli) wrote on 2008-08-16:

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 179042, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.