[Bug 103351] Machine check exception on Broadwell quad-core with SpeedStep enabled
From: <hidden>
Date: 2015-08-31 05:55:04
https://bugzilla.kernel.org/show_bug.cgi?id=103351 Ziyue Yang [off-list ref] changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |yzylivezh@hotmail.com
--- Comment #3 from Ziyue Yang <yzylivezh@hotmail.com> ---(In reply to Kristóf Marussy from comment #1)
I managed to get a stable system by booting with the processor.max_cstate=0 intel_idle.max_cstate=0 idle=poll and SpeedStep enabled. However, if I set idle=halt or idle=nomwait instead, the MCEs remain. In Windows, the Performance monitor displays that the system utilizes C-states that are claimed to be C1, C2 and C3; so it is quite odd that C1 halt in Linux triggers an MCE...
Same problem here with MSI GE62 2QE Apache Pro. I tried both debian8.1 and Ubuntu15.04 on the real machine and received same kernel panics. Updating kernels to 4.2 doesn't help. I also tried those two systems in VMware workstation under Windows 10 and ended up in BSODs saying "MACHINE_CHECK_EXCEPTIONS". I then tried to use debian in VMware at runlevel=3. It seems to be stable. I don't know why. I'm going to try your way to get a stable system. Will reply if anything new discovered. -- You are receiving this mail because: You are the assignee for the bug.