Various suspend problems

There are different problems regarding suspend in qubes. While trying solve mine, I got the impression, people had problems to find their specific issue and subsequently the right solution. Thats why we should collect the solutions here according to the system/platform.

Lets start …

Intel 11th Systems - Currently no solution, see Support for Intel Tiger Lake Processors · Issue #6411 · QubesOS/qubes-issues · GitHub

Also it seems R4.1 in general has problems. Solutions?

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With Xen 4.14 (thus R4.1) there is a general problem regarding suspend/resume which seems almost solved for intel <=10th gen platforms. As workaround you can disable hyperthreading in BIOS or (re)enable it in xen by adding smt=on to xen options in grub. See Resume from suspending is broken after update to Xen 4.14 · Issue #6066 · QubesOS/qubes-issues · GitHub

For Ryzen (4700, 5700 and 5850 confirmed, but probably all) that workaround does not help. It’s (probably) a different bug/issue, see PVH VMs does not start after resume · Issue #6859 · QubesOS/qubes-issues · GitHub