Comment 4 for bug 248438
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bbfa235
(Get the code!)
Forwarding bug report from a Ubuntu user:
https:/
On the mobility M6 LY, after doing a suspend/resume, graphical errors start accumulating, and eventually locks up.
Specifying Option "AGPMode" "2" makes the problems go away.
Original Report:
"A recent (last month or two) driver update causes the M6 LY to behave weirdly when suspending/
On resume, graphical errors pop up. Horizontal regions (I'd say 10-20 pixels long and 1 pixel high) begin to appear when regions are redrawn (text in consoles scrolling/windows resizing). Additionally, regions appear in some windows where (moving left to right and top to bottom) the first 100 or so pixels are scrambled followed by a black region. Resizing the windows makes the affected regions disappear, but they are replaced by new glitches. It also seems like hardware mouse acceleration is effected. The mouse moves with a .5sec refresh rate after restarting.
Eventually, the glitches get more and more common until the machine locks hard (no ctrl+alt+backspace, caps lock key is unresponsive).
Xorg.log doesn't have any errors, so I'm at a loss to figure out where to look. Looking at lspci -vv, it seems like there might be a problem with the memory detection routines? There is only 16MB of video ram on this machine, and 128MB is reported (region 0). If it was including AGP memory, it would be in powers-of two and 116MB isn't.
Any suggestions? The attached log shows me booting, suspending/resuming and switching to/from a VT. When I switched to the VT, nothing came up. I tried upgrading my ati driver with a version from https:/
$ lspci -vv
1:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY (prog-if 00 [VGA controller])
"