kernel-packages team mailing list archive
-
kernel-packages team
-
Mailing list archive
-
Message #142022
[Bug 1509764] Re: Machine Check Exception with Broadwell CPU
** Attachment added: "/proc/cpuinfo"
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1509764/+attachment/4504496/+files/cpuinfo
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1509764
Title:
Machine Check Exception with Broadwell CPU
Status in linux-firmware package in Ubuntu:
New
Bug description:
My system freezes and reboots 30 seconds later. This happens at random times between shortly after boot or up to three ours after boot. My CPU is a Core i5 5675C. I think it is the same problem discussed here https://bugzilla.kernel.org/show_bug.cgi?id=103351
They have a microcode update as a fix there.
All Broadwell CPUs seem to be affected. It does not happen with Fedora 22.
There are two workarounds that help for some people:
1. boot with "processor.max_cstate=0 intel_idle.max_cstate=0 idle=poll"
2. Disable speedstep in the bios
Both don't work for me.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1509764/+subscriptions
References