On 14/11/25 18:41, Gleb Smirnoff wrote:
On Fri, Nov 14, 2025 at 06:03:15PM -0300, Renato Botelho wrote:
R> After upgrading my laptop this morning I noticed it was freezing after
R> suspend/resume. I've bisected and ended up on this commit.
R>
R> I confirmed reverting d6f10a5d013f (only to prevent conflicts) followed by
R> f1b9c1aafd84 and 3deb21f1afd5 have fixed the issue.
R>
R> My system is running today's CURRENT at 82d8a5029a80.
Looks like the commit you point at can't be a culprit. Looking closer to your
description "reverting d6f10a5d013f followed by f1b9c1aafd84 and 3deb21f1afd5"
it seems that the only functional change is addition of device tpm and
rdrand_rng and option RANDOM_ENABLE_TPM to the GENERIC.
Can you please try unmodified main sources at 82d8a5029a80, but modify GENERIC
to remove these two lines:
+# random(4)
+device rdrand_rng # Intel Bull Mountain RNG
+device tpm # Trusted Platform Module
+options RANDOM_ENABLE_TPM # enable entropy from TPM 2.0
If that helps, can you please find which particular line makes the
regression.
Hello Gleb!
I was far from keyboard during the weekend but I tested it today and
RANDOM_ENABLE_TPM is the option that trigger the issue.
I've commented out RANDOM_ENABLE_{TPM,KBD,MOUSE} on unpatched src at
82d8a5029a80 and suspend/resume worked as expected. Uncommenting
RANDOM_ENABLE_TPM made it to stop working again.
--
Renato Botelho
