Comment 25 for bug 586325

If it helps in any way: I have the same problem with

System environment:
 -- chipset: G965
 -- system architecture: x86_64
 -- xf86-video-intel: git snapshot with last commit 8ece6cf5afa1bb0d8d9328696422f42f3c3adbd6 from Sat Mar 6 14:09:12 2010 -0500
 -- xserver: Server 1.7.5
 -- mesa: 7.7
 -- libdrm: 2.4.17
 -- kernel: 2.6.31-gentoo-r6
 -- Linux distribution: Gentoo
 -- Machine or mobo model: Intel DG965SS
 -- Display connector: VGA/DE-15

I have *two* working resolutions with a monitor "Captiva E1902W" (cheap flatscreen): 1440x900@59,9 and 1280x1024@75.0. I can switch between these two modes and everything works fine. For any other tested mode (1024x768, 800x600, 640x480), I encounter the same out-of-sync problem as descried above. From that state, the only way to recover I have found is a reboot. Switching back to a working mode does not help: the screen stays corrupted. Switching to a VT makes things even worse (black screen, sometimes freeze when afterwards switching back to X).

Please let me know if you need any further information from me.