Bug#1139269: tpm tpm0: tpm_try_transmit: send(): error -62

From	Uwe Kleine-König <ukleinek@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1139269: tpm tpm0: tpm_try_transmit: send(): error -62
Date	2026-06-16 11:40 +0200
Message-ID	<N6yr0-deWX-3@gated-at.bofh.it> (permalink)
References	<N3v6h-b81u-1@gated-at.bofh.it> <N3v6h-b81u-1@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hello,

On Sun, Jun 07, 2026 at 11:18:54PM +0000, cattering@riseup.net wrote:
> Package: linux-image-amd64
> Version: 6.12.90-2
> Related to: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1102422
> 
> I noticed one of Debian machine is making a lot of noise in journalctl
> logs. Can you tone this down by default? I didn't tune any kernel at
> all.
> 
> Below is a piece of logs - see how frequently it is.
> 
> XX:02:23 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:02:35 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:02:47 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:02:59 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:03:11 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:03:23 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:03:35 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:03:47 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:03:59 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:04:11 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:04:23 tpm tpm0: tpm_try_transmit: send(): error -62
> [...]
> XX:15:01 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:15:13 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:15:25 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:15:37 tpm tpm0: tpm_try_transmit: send(): error -62
> XX:15:49 tpm tpm0: tpm_try_transmit: send(): error -62

Can you please provide a full kernel log (e.g. from `journalctl --dmesg
-b`)? And ideally also the output of `reportbug --template
linux-image-$(uname -r)`.

Do you use the TPM consciously? If it's just about getting rid of the
log messages, you can just unload the driver. On my laptop that works as
follows:

 ~$ cd /sys/class/tpm/tpm0/device/driver
 /sys/class/tpm/tpm0/device/driver$ ls
 bind  STM0925:00  uevent  unbind
 /sys/class/tpm/tpm0/device/driver$ echo STM0925:00 | sudo tee unbind

If you replace `STM0925:00` by the corresponding string from ls's
output, it should work for you, too.

Best regards
Uwe

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Bug#1139269: tpm tpm0: tpm_try_transmit: send(): error -62 cattering@riseup.net - 2026-06-08 01:30 +0200
  Processed: Re: Bug#1139269: tpm tpm0: tpm_try_transmit: send():  error -62 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-06-16 11:40 +0200
  Bug#1139269: tpm tpm0: tpm_try_transmit: send(): error -62 Uwe Kleine-König <ukleinek@debian.org> - 2026-06-16 11:40 +0200

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