Created attachment 523551 [details] strace of X process while using 100% CPU. fd 6 is /dev/tty2, fd 7 is /dev/vga-arbiter Description of problem: Sometimes X server uses 100% CPU time, and continues using it until the process is killed. Version-Release number of selected component (if applicable): xorg-x11-server-Xorg-1.10.4-1.fc15.x86_64 Additional info: KDE desktop on Fedora 15 (with latest updates). The problem started a few months ago. X might start using 100% CPU time even on minimal use (only one konsole open). Sometimes a day or two might go without the problem appearing and at other times it happens every few minutes. When X starts to use 100% CPU, the following line appears in log file: Sep 16 15:13:38 matan systemd[1]: getty holdoff time over, scheduling restart. strace of X process while it is using 100% CPU is attached.
This seems like an obvious problem, but some more information about the context, could be helpful. Please add drm.debug=0x04 to the kernel command line, restart computer, and attach * your X server config file (/etc/X11/xorg.conf, if available), * X server log file (/var/log/Xorg.*.log*; check with grep Backtrace /var/log/Xorg* which logs might be the most interesting ones, send us at least Xorg.0.log) * output of the dmesg command, and * system log (/var/log/messages) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above. We will review this issue again once you've had a chance to attach this information. Thanks in advance.
Created attachment 524172 [details] xorg.conf
I am seeing the same problem on my F15 PC. An strace shows similar output to that of the reporter, but mainly the 'select(256,...' and 'EIO' lines (didn't see many read/write lines at all). I have rebooted with 'drm.debug=0x04' and will send the requested files when the problem occurs.
Created attachment 556421 [details] Xorg.0.log file
Created attachment 556422 [details] Output of the dmesg command
Created attachment 556423 [details] xorg.conf file
Created attachment 556424 [details] /etc/X11/xorg.conf.d/00-nvidia.conf file
Created attachment 556425 [details] /etc/X11/xorg.conf.d/00-system-setup-keyboard.conf file
Created attachment 556426 [details] /etc/X11/xorg.conf.d/local.x11.conf file
Created attachment 556428 [details] /var/log/messages file I had to chop the file down since bugzilla didn't like 40MB. It is now 3.7MB in size, but includes all the output for the day when I was doing this (19 Jan 2012).
Should have added kernel and xorg server rpm versions: uname -a Linux jhorne 2.6.41.4-1.fc15.x86_64 #1 SMP Tue Nov 29 11:53:48 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux rpm -q xorg-x11-server-xorg xorg-x11-server-Xorg-1.10.4-1.fc15.x86_64 'top' command is currently showing: ==================================================== Tasks: 178 total, 2 running, 176 sleeping, 0 stopped, 0 zombie Cpu(s): 5.8%us, 44.5%sy, 0.0%ni, 49.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 7921400k total, 1932692k used, 5988708k free, 62132k buffers Swap: 8388604k total, 0k used, 8388604k free, 680824k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 2151 root 20 0 183m 35m 9084 R 100.3 0.5 39:43.26 X 2611 john 20 0 591m 25m 16m S 0.3 0.3 0:09.54 konsole 1 root 20 0 58116 25m 1888 S 0.0 0.3 0:04.54 systemd 2 root 20 0 0 0 0 S 0.0 0.0 0:00.03 kthreadd ==================================================== As can be seen PID 2151 the 'X' server is using 100% CPU time.
Created attachment 556430 [details] Some output from 'strace' of PID 2151
John you are using closed source driver we can't help you.
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