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Description of problem: While try to workaround a system hold state during reboot ("Unmounting filesystems") I found that Alt-Sysrq B for reboot is ignored, while S for sync and U for umount is still working well Version-Release number of selected component (if applicable): 2.6.38.6-27.fc15.i686.PAE How reproducible: always Expected results: proper working Additional info: P for poweroff is working
Does reboot work otherwise, in normal use with the 'reboot' command or requesting reboot in graphical mode?
Normal reboot did not proper work in some situations, because F15 has troubles unmounting all NFS drives (which it shouldn't, but I still investigate this). Therefore I tried Alt-Sysrq Alt-Sysrq-S for FS sync works Alt-Sysrq-U for FS in R/O mode works, too Alt-Sysrq-H for help works also Alt-Sysrq-B: no action, have to push the reset button :-(
This must be a scan code issue, I found that while Alt Gr (right side from "SPACE") + B is not working (but others like S, U, H) the following Alt (left side from "SPACE") + B works