We have a large number of laptops running 16.04 impacted by this bug.
The initial testing after disabling c6 states has been very promising.
We are deploying that fix now. Here is the script for reference:
https://bugzilla.kernel.org/attachment.cgi?id=223851
I will update this bug report after
as the j1900 and the processor op uses are both listed in the Intel
errata, I guess it is really related to the c6 states hardware bug.
https://bugzilla.kernel.org/show_bug.cgi?id=109051#c436 I will try to
disable c6 states as described there and see whether this works with the
current standard
After updating from 14.04 LTS to 16.04 LTS I see the same issue with
Intel J1900 (also baytrail) and the current standard amd64 kernel
4.4.0-34. Video freezes and no input reaches the system any more. No
possibility to get out of the deadlock, no keyboard and no further logs
produced.
Some
What software did you use to watch videos when these hangs occurred?
I've now been able to hang 4.4rc8 with OpenGL 3.0 code that draws about
70 million triangles per second. I haven't been able to hang it with
streaming video from the web or playing MPEG4 (ripped dvd's) video with
VLC. And so far
I have tested Janne's kernel, but am still experiencing the freezes,
even though they have become more rare.
I have now finally sent a problem report to Len Brown and linux-pm
(sorry for the delay, wanted to test Janne's kernel before I did to make
sure, and also had to test on 4.4rc8, which has
I built Ubuntu-4.2.0-23.28 with "drm/i915: Agressive downclocking on
Baytrail" reversed and it can be found from here:
http://www.helsinki.fi/~jmoheikk/baytrail/
If you could test whether it works or not.
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As topic says it, ASUS R752MA is Bay Trail based so could be same cause:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1531865
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https://bugs.launchpad.net/bugs/1530557
Title:
Hmmm, I don't remember, actually. When I got this machine, I installed from a
14.04 DVD, but immediately updated to 15.10 via 15.04 before I even really
started using it. I don't remember it having hung in the few hours I had it run
on 14.04 or 15.04 while setting things up, but I could be
** Tags added: vivid
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https://bugs.launchpad.net/bugs/1530557
Title:
Random hard freezes under X on a laptop with Intel BayTrail processor
(ASUS R752MA)
To manage notifications
Thomas Moestl, the issue you are reporting is an upstream one. Could you
please report this problem following the instructions verbatim at
https://wiki.ubuntu.com/Bugs/Upstream/kernel to the appropriate mailing
list (TO Len Brown CC linux-pm)?
Please provide a direct URL to your post to the
** Summary changed:
- Random hard freezes under X on a laptop with Intel BayTrail (ASUS R752MA)
processor, Ubuntu 15.10
+ Random hard freezes under X on a laptop with Intel BayTrail processor (ASUS
R752MA), Ubuntu 15.10
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Thomas Moestl, thank you for reporting this and helping make Ubuntu
better.
To see if this has been addressed in the upstream release, could you
please test the latest drm-intel-nightly via http://kernel.ubuntu.com
/~kernel-ppa/mainline/drm-intel-nightly/ and advise to the results?
** Tags
Thanks!
I have tried the newest available build from drm-intel-nightly, linux-
image-4.4.0-994-generic_4.4.0-994.201512302100_amd64.deb :
> cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-4.4.0-994-generic
root=UUID=dbe91b1d-f01e-4f19-85eb-3877b67143ac ro quiet splash vt.handoff=7
Unfortunately it
Thomas Moestl, to clarify, did this issue not occur in a release prior
to 15.10?
** Description changed:
System freezes hard when working under X, sometimes after minutes,
sometimes after hours. Usually, but not always, graphics-intensive
applications like viewing videos will trigger the
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