Comment 4 for bug 160309

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Bryce Harrington (bryce) wrote :

Subscribing Intel Hardware Certification. The question is, what procedure(s) can be used to debug crashes that occur only after being idle? Does the information at the end of the Xorg.0.log.old give enough clue, or are there additional debugging steps that the reporter could take?

Greg, I think your issue is different from this one. Your error messages don't match up, and you're seeing a freeze, rather than a crash and restart, so it's unlikely to be the same problem.

However, it's a good suggestion to turn off the screensaver - zdzichu, can you reproduce the issue even when the screensaver is completely turned off?

tuxo, I'm also thinking your issue is an unrelated bug, since the OP issue occurs after an idle period, whereas yours occurs after logging in. There are other reports that may be a closer match to yours.

I've collected the reports from people reporting X problems on screen mode changes: https://wiki.ubuntu.com/X/Bugs/ScreenModeChange

I think there's more than two bugs represented here, but in many cases we don't have enough data. Please look at the above page and fill in the missing data.

I've also created a page summarizing how to analyze and work around these issues. It would be worthwhile for anyone experiencing these issues to review and try these steps, and then report their findings on the appropriate bug

https://wiki.ubuntu.com/X/Debugging#head-0b6e9c6b60fa07cda4013a1c51239f1c14c4f89d