<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [KBL] "enable_rc6" parameter deprecation brings back freezing" href="https://bugs.freedesktop.org/show_bug.cgi?id=105962#c26">Comment # 26</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [KBL] "enable_rc6" parameter deprecation brings back freezing" href="https://bugs.freedesktop.org/show_bug.cgi?id=105962">bug 105962</a> from <a class="email" href="mailto:freedesktop.org@nospam.mooo.com" title="paulz <freedesktop.org@nospam.mooo.com>"> paulz</a> <pre>(In reply to Tomi Sarvela from <a href="show_bug.cgi?id=105962#c24">comment #24</a>) > If you see /sys/fs/pstore, then the feature is enabled and working. > > Next thing is to configure linux to write dmesg buffer to pstore when > panicing, and the important thing is to panic. Add to command line: > > nmi_watchdog=panic,auto panic=5 softdog.soft_panic=5 > > (5 on the command line means 5 seconds) > > Unfortunately, in many suspend/hang issues nothing gets written to pstore > because CPU is not available. Pstore is a last resort thing, a bit like > console: it might help, or it might stay silent. No it's not, EFI store is just mounted! We have also have to load the module "efi_pstore" (CONFIG_PSTORE_RAM=m) and maybe "ramoops" so i added it to /etc/modules! Now there are dmesg-efi-* files in /sys/fs/pstore/ if i trigger a kernel crash! now i am waiting for next freeze whithout disabling "rc6" (boot options: debug ignore_loglevel drm.debug=0x1f nmi_watchdog=panic,auto panic=5 softdog.soft_panic=5)</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>