Looks like the same issue I had:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861395
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https://bugs.launchpad.net/bugs/1861590
Title:
Intel GPU hangs constantly under load. Afte
** Attachment added: "card0/error from Focal Daily Live ISO"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-5.4/+bug/1861590/+attachment/5324736/+files/card0errorfocallive.log
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As asked on #ubuntu+1 IRC, I tested on Xubuntu Focal Daily Live. It was
needed 2 hours until I got a GPU hang, but once got it, the computer
behaved exactly the same.
** Attachment added: "dmesg from Focal Daily Live ISO"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-5.4/+bug/1861590/
** Attachment added: "card0/error"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-5.4/+bug/1861590/+attachment/5324715/+files/errorcrosscode54012.log
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** Attachment added: "dmesg"
https://bugs.launchpad.net/ubuntu/+source/linux-signed-5.4/+bug/1861590/+attachment/5324714/+files/dmesgcrosscode54012.log
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