<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [Lenovo ThinkPad T450s] Issues after docking and locking: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun" href="https://bugs.freedesktop.org/show_bug.cgi?id=103643#c12">Comment # 12</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [Lenovo ThinkPad T450s] Issues after docking and locking: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun" href="https://bugs.freedesktop.org/show_bug.cgi?id=103643">bug 103643</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to Alexander Kops from <a href="show_bug.cgi?id=103643#c11">comment #11</a>) > Created <a href="attachment.cgi?id=135451" name="attach_135451" title="kern.log with running drm-tip kernel from today - Computer froze at 16:17:45">attachment 135451</a> <a href="attachment.cgi?id=135451&action=edit" title="kern.log with running drm-tip kernel from today - Computer froze at 16:17:45">[details]</a> > kern.log with running drm-tip kernel from today - Computer froze at 16:17:45 > > I'll attach this current kern.log. This time the situation was a bit > different, I didn't find the notebook turned off, but the power light was > still on, but all three screens were black and it didn't react to anything. > So I had to hard reboot it. > > Maybe you can see something in the logs that would lead to a follow up bug > report? > > The last thing I see in the log before the crash are a bunch of > > [drm:drm_mode_addfb2 [drm]] [FB:87] > > lines. Nothing interesting there unfortunately. So I guess we're dealing with some kind of hard system hang, and it doesn't manage to write anything useful to the logs. So it's not even clear whether this has anything to do with i915, or caused by something totally different. Maybe try netconsole/serial console if the machine has a ethernet/serial port. Or you may want to look into pstore to see if that might catch something when the machine dies. Maybe also enable various debug features in the kernel config: CONFIG_LOCKUP_DETECTOR=y CONFIG_SOFTLOCKUP_DETECTOR=y CONFIG_HARDLOCKUP_DETECTOR=y CONFIG_DETECT_HUNG_TASK=y CONFIG_PROVE_LOCKING=y PS. Your logs are huuuuge. Might want to trim away the unrelated boots from the logs.</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>