Minor graphical corruption (ATI Radeon Mobility HD 3400 / Dell Studio 15); rare corrupted pixels -- Regression: no such bug in Intrepid

[Thomas O.]

Occasional graphical corruption is sometimes visible on web pages in Firefox (but possibly other programs). It usually takes the form of blocks of corrupt pixels (black/white typically) no bigger than 15 pixels. Sometimes it is just a line. I am using proprietary drivers (fglrx), but this glitch did not exist in Intrepid, also with proprietary drivers. Scrolling the page resolves the problems usually.

Minor issue; causes no real problems but it might indicate some bigger problem somewhere.

[Thomas O. (thomas-tgohome)]

A pretty large amount of corruption can be seen in Firefox - part of the page is black where it shouldn't be.

[Bryce Harrington (bryce)]

Hi thomas-tgohome,

Thanks for including an image to demonstrate the issue. Could you also please attach the output of `lspci -vvnn`, and attach your /var/log/Xorg.0.log or Xorg.0.log.old file from after reproducing this issue. If you've made any customizations to your /etc/X11/xorg.conf please attach that as well.

[This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

[Bryce Harrington (bryce)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.