Bug#370709: xserver-xorg-video-nv: system hang in NVSync() when scrolling programs or terminal windows
Hi,
Here's a final update from me about this bug. Nearly four months ago my NV GeForce MX 440 card died and was replaced with a FX 5200. Since then I had *no* lock ups, even with full acceleration, and with exactly the same xorg packages versions as reported in my last post.
Now a bit more info about what I noticed when the card was dying. First, during 2 or 3 days the bug unexpectedly reappeared several times. Then after those days, I got up and found the computer completely locked up with a black screen, and any attempt to reboot resulted in the same lock up everytime the card went in graphics mode. But I was able to use the card in console mode for two days before that part of the card died too.
Since then, I've been using my new card with full acceleration without any problems. Xorg code seems to be very sensitive to subtle graphics card glitches. My CPU is a K7 so the fix about memory_barrier suggested on the page linked to in Benjamin's post above probably would have not solved the problem on my machine.
Oh, and I also noticed that all redraw glitches that I noticed with the old card, glitches which seemed to get worse with new xorg versions, are completely gone. FYI, those glitches were mostly about white horizontal dashed lines drawn outside xterm windows at the top-most Y coordinate of those windows, or failing to update several rasters outside windows around the top-most Y coordinates of those windows. Those glitches were more noticeable when moving windows. They *may* be the results of bugs in non-accelerated redraw code though.
I'm sorry I'm unable to continue contributing feedback for this bug.
Thanks to everyone for their contributions anyway, and continue enjoying Linux,
Bernard.
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