Comment 6 for bug 1877889

Thanks for the reply,

I followed the link provided in that bug ( https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/current/ ) and couldn't find "5.7.0-994.20200511220" there.

The version there currently is "5.7.0-994.202005132209". I assumed this is just a few days newer than the one you suggest, so tried it anyway (hashes below).

Unfortunately that kernel does not boot for me. I get an error message stating "error: /vmlinuz-5.7.0-994-generic has invalid signature". I don't see any mention of this error on the wiki pages linked from the drm-tip downloads page:
* https://wiki.ubuntu.com/Kernel/MainlineBuilds
* https://wiki.ubuntu.com/Kernel/FAQ

$ sha256sum linux-*.deb
555703f956f138e6d0a729ea9d031d09ee45ae772069430887a8495259bc2790 linux-headers-5.7.0-994_5.7.0-994.202005132209_all.deb
f41ed6f5c7cb0b7fa618a9fc079f0f8407045bacd9981973ed2c1ee593e64f6c linux-headers-5.7.0-994-generic_5.7.0-994.202005132209_amd64.deb
3c4c454454678f7d1077489b7126de6f8f337510db8d061795cc1ae56c6bb650 linux-image-unsigned-5.7.0-994-generic_5.7.0-994.202005132209_amd64.deb
13120fd4eb5ec37707c2883b3e6b57b3f2d82a10ab85d0af4812f83370cbe041 linux-modules-5.7.0-994-generic_5.7.0-994.202005132209_amd64.deb