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Ryzen 4000 (Mobile) Softlocks/Micro-stutters

Hi All,

I'm currently using Xen 4.14 (Qubes 4.1 OS) on a Ryzen 7 4750U PRO, by default I'll experience softlocks where the mouse for example will jolt from time to time, in this state it's not usable.

Adding `dom0_max_vcpus=1 dom0_vcpus_pin` to Xen's CMDLINE results in no more jolting however performance isn't what it should be on an 8 core CPU, softlocks are still a problem within domU's, any sort of UI animation for example.

Reverting this commit (8e2aa76dc1670e82eaa15683353853bc66bf54fc) results in even worse performance with or without the above changes to CMDLINE, and it's not usable at all.

Does anyone have any pointers?




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