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Hang, then recovery with garbled screen, reboot on X restart #12
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During the garbled screen an xterm at 0 0 appears to render scrolled text offset at around +770+242. Moving the xterm right and down produces a matching offset in rendering. Moving a firefox window around exhibits the same offset rendering, but any updates to content (typing into thie form for example) render correctly |
relevant section from /var/log/messages below, including error messages from hang and panic string Apr 4 15:09:10 forsaken /netbsd: sd0: detached v---- system appears hung v---- /etc/rc.d/xdm restart ran (and system rebooted) |
Upon reboot system has re-entered offset rendering state, but without any apparent hang during X startup and login, presumably some state is persistent across warm boot. |
Thanks for your detailed report. The first error message ( I've also experienced the offset rendering state, and, in my experiments, this state is transient: the X server hangs shortly afterwards. But the persistence (across warm boot) of the offset rendering state is something I've never experienced, and I don't see where this could come from. |
Issue just reoccurred - hang as clicking on link in firefox. Waited a minute or so, hit ALT+F1, then after a moment it switched to console but only showing cursor, switching back to X had offset issue. Manually rebooted at that point. |
Also has happened twice overnight - while screen was running xmatrix screensaver from kde4. Similar symptoms - apparent hang but will switch to blank with cursor VT after some time, can switch back but with xterm rendering offset & now corrupted glyph. will try restarting X to see if it reboots :) |
Hmm - that time a /etc/rc.d/xdm restart seems to have been happy |
OS: NetBSD-6_BETA amd64 from netbsd-daily 2012-03-21, plus ftp://ftp.netbsd.org/pub/NetBSD/misc/gsutre/drmgem-NetBSD-6.99.3-201203091940Z-amd64/
System: Thinkpad T500 with "Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07)"
After running fine for several hours system appeared to hang while page loading on Firefox.
Appeared non responsive with Ctrl+Alt+F1.
After around a minute display switched to black screen with white cursor at top left, system then was able to switch back to X session but with garbled graphics, and then switch back to constty with correct display.
Restarting xdm rebooted machine
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