http://bugzilla.opensuse.org/show_bug.cgi?id=1137748 http://bugzilla.opensuse.org/show_bug.cgi?id=1137748#c103 Biswarup Ray <biswarupr@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |biswarupr@gmail.com --- Comment #103 from Biswarup Ray <biswarupr@gmail.com> --- I have switched to Tumbleweed recently and I am facing the same problem with a gigabyte Mobo from 2012. These are the relevant points: 1. Suspend to Ram works in the latest Ubuntu 20.04, Fedora and MX Linux releases but not on Tumbleweed or Leap 15.2 RC. 2. Suspend to Ram works with the kernel parameter <maxcpus=0> or 'nosmp'. 3. Noticing that suspend to ram works if booted with one cpu core enabled, I tried to disable the non boot cpu of my dual core pentium G640 on the fly (using the hot plug feature), but that did not work! 4.Since the <maxcpus=0> kernel parameter disables apic, this is most probably related to APIC. This is stated in kernel documentation: "maxcpus= [SMP] Maximum number of processors that an SMP kernel should make use of. maxcpus=n : n >= 0 limits the kernel to using 'n' processors. n=0 is a special case, it is equivalent to "nosmp", which also disables the IO APIC." -- You are receiving this mail because: You are on the CC list for the bug.