Hi, On 2025-04-10 08:30, Jiann-Ming Su wrote: > I did not see any such message from linux-image-6.1.0-31.
Can the issue be reliably reproduced? Is it sufficient to boot into linux-image-6.1.0-32-amd64 to see the errors, and rebooting into linux-image-6.1.0-31-amd64 shows no errors? > I don't think this particular system is doing any tpm operations. > Please see attached kern.log.xz. Very useful, thank you. I have a similar Chromebook and cannot reproduce the isse. My system also uses the Chromebox firmware (though a more recent version, see below). Including some dmesg output here for reference: [ 0.000000] efi: EFI v2.70 by EDK II [ 0.000000] efi: SMBIOS=0x1ffd6000 SMBIOS 3.0=0x1ffd4000 ACPI=0x1fffe000 ACPI 2.0=0x1fffe014 MEMATTR=0x1ec35418 MOKvar=0x1ff9d000 [...] [ 0.000000] DMI: GOOGLE Celes/Celes, BIOS MrChromebox-4.19.1 01/29/2023 [...] [ 1.646156] tpm_tis 00:07: 1.2 TPM (device-id 0xB, rev-id 16) The tpm_tis output is exactly the same as yours. It seems that on your system the errors show up some minutes after boot, not immediately. From your dmesg output: [ 12.732250] tun: Universal TUN/TAP device driver, 1.6 [ 524.061466] tpm tpm0: tpm_try_transmit: send(): error -62 [... log flood follows ...] This makes me wonder if perhaps some of the applications you're running use the tpm in some way that triggers the issue, and maybe I'm not running those? Which destkop environment, if any, are you using? Could you share the output of `sudo journalctl -b`? Also, could you try installing the tpm-tools package and running the following (possibly before the tpm_try_transmit errors begin)? $ /usr/sbin/tpm_version On my system I get: TPM 1.2 Version Info: Chip Version: 1.2.4.34 Spec Level: 2 Errata Revision: 3 TPM Vendor ID: IFX Vendor Specific data: 042203f2 0274706d 3338ffff ff TPM Version: 01010000 Manufacturer Info: 49465800 Finally, I see that you're booting your kernel with pci=noaer. Any specific reasons for that? Thanks, Emanuele
