Hi Chris, On Friday, 3 May 2019 17:54:52 BST Jack wrote: > On 2019.05.03 12:28, Spackman, Chris wrote: > > All, > > > > I set up a new AMD computer (moved disk from previous Intel > > computer). After some struggles with bios settings, I got it to boot > > properly and updated for the new hardware. All seemed fine, but then > > it > > started "crashing" when left alone. From Googling, it seems that it > > has > > something to do with the bios powering down drives that aren't in use, > > but then not being able to power them back up. > > > > When it "crashes" (goes into a coma?), I have to use the power button > > to > > turn it off and then back on. As it starts up, the root partition is > > clean, but home has to be recovered - which seems to indicate that it > > is > > indeed an issue with the mobo/bios turning off the root drive. > > > > I found a Linux site that suggested this line in dmesg as a symptom: > > > [Firmware Bug]: ACPI MWAIT C-state 0x0 not supported by HW (0x0) > > > > The solution was to turn of C-states in the bios. I forget the exact > > wording right now, but I could not find it in my bios. I tried to > > turn off > > everything that seemed related to power saving, but several did not > > have > > an "off" option. So, I am still getting the error. > > > > For now, I set up a cron job to move a file from /root to /tmp every > > 15 > > minutes. This seems to work, but it is obviously not a long term > > solution. > > > > I checked for a bios update, but there was not one available. > > > > Has anyone else experienced this? Is there maybe a /sys/ or /proc/ > > file > > I can tweak to avoid bios powering things off? > > > > Thanks. > > It's only a guess, but I'd suggest looking through the kernel docs to > see if there is any boot command line parameter that might do this. > > Jack
Did you try Ctrl+Alt+SysRq + R,E,I,S,U,B to reboot it more gracefully rather than pressing the power button? Regarding kernel parameters, you could try: idle=nomwait since dmesg indicates there's something wrong with it and hope a future firmware release will address this bug. -- Regards, Mick
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