5.14-rc failure to resume

From: Jens Axboe
Date: Sat Jul 24 2021 - 11:57:46 EST


I ran into this when doing the last bit of testing on pending changes
for this release on the laptop. Outside of running testing on these
changes, I always build and boot current -git and my changes on my
laptop as well.

5.14-rc1 + changes works fine, current -git and changes fail to resume
every single time. I just get a black screen. Tip of tree before merging
fixes is:

commit 704f4cba43d4ed31ef4beb422313f1263d87bc55 (origin/master, origin/HEAD, master)
Merge: 05daae0fb033 0077a5008272
Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Fri Jul 23 11:30:12 2021 -0700

Merge tag 'ceph-for-5.14-rc3' of git://github.com/ceph/ceph-client

Since bisection takes forever on the laptop (gen7 x1 carbon), I
opportunistically reverted some of the most recent git pulls:

- ec6badfbe1cde0eb2bec4a0b8f6e738171156b5b (acpi changes)
- 1d597682d3e669ec7021aa33d088ed3d136a5149 (driver-core changes)
- 74738c556db6c7f780a8b98340937e55b72c896a (usb changes)
- e7562a00c1f54116f5a058e7e3ddd500188f60b2 (sound changes)
- 8baef6386baaefb776bdd09b5c7630cf057c51c6 (drm changes)

as they could potentially be involved, but even with all of those
reverted it still won't resume.

Sending this out in case someone has already reported this and I just
couldn't find it. If this is a new/unknown issues, I'll go ahead and
bisect it.

Jens Axboe