Hi, I may have not copied the correct error message when the system freezes after passing lspci in recovery mode (unless the message changed). I report below the corrected message.
To sum up: - using linux 4.8.0. I notice no problem. - When I first booted linux 4.9.0, I got a TPM error message that I never had before. Disabling the security chip from BIOS solved it. - The system does not boot as it gets stucked after loading some service (e.g., network manager). - It boots in recovery mode, but freezes when passing the lspci command. It also freezes if I pass "systemctl reboot" - Logs show error messages related to acpi, drivers, remount error of EXT4 partition (fsck did not find problems), and segfault related to gnome-session-f (https://is.gd/fMGaPr). Do you have any hint to identify and understand better the origin of the issue (please let me know if you need more info)? Here is the message before the system gets stucked: # lspci -nn | grep VGA [ 111.290008] thinkpad_acpi: EC reports that Thermal Table has changed [ 111.290185] nouveau 0000:01:00.0: DRM: resuming kernel object tree.. [ 111.477119] nouveau 0000:01:00.0: DRM: resuming client object trees... [ 111.478199] nouveau 0000:01:00.0: DRM: resuming display... [ 111.479289] nouveau 0000:01:00.0: DRM: resuming console... Thanks, Francesco On Sat, Jan 28, 2017 at 02:35:24PM +0200, Francesco Montanari wrote: > Hi, > > With a recent Stretch update, linux 4.9.0-1-amd64 was installed. I got: > A TPM error (6) occurred attempting to read a pcr value > > Disabling the security chip from BIOS solved the error. Still, 4.9.0 > does not boot. It manages to start some service (e.g., network > manager), but then it gets stuck before displaying the login screen. > > I managed to boot in recovery mode. I collect here some grep of errors > and warnings: > > - From dmesg: > [ 0.773426] acpi PNP0A08:00: _OSC failed (AE_SUPPORT); disabling ASPM > > - From journalctl -xb: > Jan 28 10:05:08 debian-francesco kernel: acpi PNP0A08:00: _OSC failed > (AE_SUPPORT); disabling ASPM > -- The process /bin/plymouth could not be executed and failed. > Jan 28 10:05:17 debian-francesco bluetoothd[512]: Sap driver initialization > failed. > Jan 28 10:05:08 debian-francesco kernel: EXT4-fs (sda3): re-mounted. Opts: > errors=remount-ro > -- The error number returned by this process is 2. > > - From syslog: > https://is.gd/fMGaPr > > When rebooting from recovery mode (i.e., executing 'systemctl > reboot'), it also gets stuck. > > Finally, If I pass the following command in recovery mode > # lspci -nn | grep VGA > it gets stuck (ctrl-c/d/z have no effect) right after displaying this > message: > [ 19.948099] nouveau 0000:01:00.0: DRM: suspending console... > [ 19.951782] nouveau 0000:01:00.0: DRM: suspending display... > [ 19.955032] nouveau 0000:01:00.0: DRM: evicting buffers... > [ 19.958215] nouveau 0000:01:00.0: DRM: waiting for kernel channels to > go idle... > [ 19.961380] nouveau 0000:01:00.0: DRM: suspending client object > trees... > [ 19.964738] nouveau 0000:01:00.0: DRM: suspending kernel object tree... > > I successfully booted with the old 4.8.0 kernel (normal mode). In that > case: > $ lspci -nn | grep VGA > 00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation > Core Processor Family Integrated Graphics Controller [8086:0126] (rev 09) > 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GF119M [Quadro > NVS 4200M] [10de:1057] (rev a1) > > > Not sure if it is related to some configuration I may have modified in > the past, to graphics drivers or, e.g., to old BIOS? Maybe something > else? > > I have a Thinkpad T420. > > Thanks, > Francesco >