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?
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
@BigQ Thank you for pointing to the Github hyperthreading solution! Stumbling upon this thread means I can finally suspend my laptop after upgrading months ago to 4.1. I have only been able to sleep since then. But now suspend works again and I can close the lid!
@BigQ this solved the suspend problem on my Dell Precision 5520 with 7th Gen Xeon. I disabled hyper-threading in bios. additionally I had to disable Trusted Execution in bios to allow hyper-threading to be disabled on my Dell.
Many Thanks
for my x230, disabling hyper-threading in the bios solved the issue that it wouldn’t go into proper suspend, and then not wake up.
Great to see that I could help!
I’m experiencing suspend problems as well, with the latest qubes and fully updated system. In my case I can’t even get the computer to suspend phase, it just keep working(fans) with black screen and non-responsive touchpad/keyboard. I use 8th gen mobile processor(i7 8565u) and tried to disable hyperthreading without any luck. I tried to shutdown all other VMs except the dom0 before suspending, didn’t help. I also tried to use hibernate instead of suspend, same results.
Is there anything else I can try before trying to update to the latest kernel?
P.S. I should probably mention that I do have problems with rebooting the system as well, but with rebooting I do get response from keyboard when I press a key(backlight).
Hibernation is not expected to work (yet):
Did you try this? Suspend/resume troubleshooting | Qubes OS
You may find that the latest kernel brings with it a range of other
faults.
If there are new suspend issues, we need a volunteer to update this list:
@fsflover Thank you for pointing to these resources. Didn’t know about hibernation and suspend troubleshooting section. The last paragraph of suspend troubleshooting helped me out(Suspend/resume troubleshooting | Qubes OS): adding mem_sleep_default=deep to kernel params. Such a relief. Thanks a lot.
@unman Yes, that’s why I checked if there’s anything I missed(I did) before going this way. Leaved it as last resort.