X goes blank with SAK SysRq
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Hi,When Ctrl-Alt-Bksp (with zapping) fails to resolve my hang, recently I read about SAK which also works as killing all on current console, and it is invoked as Alt-SysRq-K . However, I noticed that invoking it with X running puts the whole system into an unknown state -- blank screen on both monitors with my dual setup -- to be resolved only through REISUB SysRq combination. I tried SAK without X running and it works fine with getty respawing. With X running however it goes into above state, unresolvable without a hard reset or REISUB.
So, is anyone else facing this ? I am running with following configuration
================== X.Org X Server 1.11.3 Release Date: 2011-12-16 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.1.5-1-ARCH x86_64Current Operating System: Linux Xye 3.2.0-rc7-VYX #142 SMP PREEMPT Thu Jan 5 19:18:50 IST 2012 x86_64 Kernel command line: root=/dev/sda6 ro quiet vga=773 devtmpfs.mount=on acpi_osi=Linux intel_iommu=off
Build Date: 17 December 2011 09:17:41AM Current version of pixman: 0.24.0 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. ================== Also, the graphics driver is nvidia 295.09.There is another way to resolve hung X ie with SysRq-E but it kills all processes (even daemons) except init which I don't want.
Regards, -------------------------- Raghavendra Prabhu GPG Id : 0xD72BE977 Fingerprint: B93F EBCB 8E05 7039 CD3C A4B8 A616 DCA1 D72B E977 www: wnohang.net
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