[Bug 105962] [KBL] "enable_rc6" parameter deprecation brings back freezing

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105962

--- Comment #51 from Imre Deak <imre.deak at intel.com> ---
(In reply to Timo Teräs from comment #50)
> Created attachment 144792 [details]
> various dmesg w/ drm.debug=0xe on dell laptop
> 
> Find attached the dmesg of boot up, successful power down/up and finally
> from the crash. After several attempts I managed to get two WARN_ON() back
> traces on it, so it might actually be very useful.
> 
> The power off is done by XFCE Power Manager: Settings > Power Manager >
> Display tab > Display power management (enabled, with switch off at 1
> minutes). I then wait for 1 minute for power off. Power on is attempted by
> typing on keyboard.
> 
> It seems that sometimes the crash happens pretty soon after powering display
> off (e.g. system crash can happen earlier than 60 seconds). It seems to be
> total hang as I had a little loop copying uptime to a file and running
> 'sync'. And that stops usually around the time display wake up is attempted.

Could you try if you can still reproduce the same problem when booting with
i915.enable_dc=0 ?

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20190716/9bf4fab3/attachment.html>