** Description changed:
I run Ubuntu Budgie 20.04 on my Lenovo ThinkPad T14s with Ryzen 4750U
processor together with the "Lenovo ThinkPad USB-C Dock (Gen 2)"
(40AS0090EU).
The docking station is connected via USB-C to the system, supplies it
with power via USB Power Delivery and prov
apport information
** Tags added: apport-collected
** Description changed:
I run Ubuntu Budgie 20.04 on my Lenovo ThinkPad T14s with Ryzen 4750U
processor together with the "Lenovo ThinkPad USB-C Dock (Gen 2)"
(40AS0090EU).
The docking station is connected via USB-C to the system, sup
apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420903/+files/Lsusb.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420901/+files/Lspci.txt
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apport information
** Attachment added: "Lspci-vt.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420902/+files/Lspci-vt.txt
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** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420900/+files/IwConfig.txt
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apport information
** Attachment added: "Lsusb-v.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420905/+files/Lsusb-v.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420906/+files/ProcCpuinfo.txt
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** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420899/+files/CurrentDmesg.txt
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** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420898/+files/CRDA.txt
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Ti
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** Attachment added: "AudioDevicesInUse.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420897/+files/AudioDevicesInUse.txt
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apport information
** Attachment added: "Lsusb-t.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420904/+files/Lsusb-t.txt
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** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420913/+files/UdevDb.txt
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** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420910/+files/ProcModules.txt
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** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420909/+files/ProcInterrupts.txt
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** Attachment added: "ProcEnviron.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420908/+files/ProcEnviron.txt
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apport information
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420915/+files/acpidump.txt
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** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420914/+files/WifiSyslog.txt
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** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420912/+files/RfKill.txt
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** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420907/+files/ProcCpuinfoMinimal.txt
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** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1899336/+attachment/5420911/+files/PulseList.txt
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Seems automatic collection of ACPI dumps did not work, so I ran the
script under "/usr/share/apport/dump_acpi_tables.py" manually (as root).
This is the output.
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/ubuntubudgie/+bug/1899336/+attachment/5420945/+files/acpidump.txt
--
Okay, I now tried several times.
With kernel 5.9.0:
- Boot 1: Boots up completely, system functional.
- Boot 2: Boots to login screen, crashes after login.
- Boot 3: Crashes before LUKS unlock.
- Boot 4: Boots to login screen, crashes after login.
- Boot 5: Boots to login screen, crashes after lo
I just had the issue appear LIVE, while the system was already running
for more than 20 minutes (with "amdgpu" drivers and multi-monitor
support).
Connection to external monitors "dropped" and fortunately the system
switched to internal display (which does not always happen, sometimes
everything g
I finally managed to boot kernel 5.9 after several dozen tries.
"dmesg" output is attached, in case it is of interest.
** Attachment added: "dmesg-2020-10-20.txt"
https://bugs.launchpad.net/ubuntubudgie/+bug/1899336/+attachment/5424789/+files/dmesg-2020-10-20.txt
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Since I just had the system "drop monitors" while in the UEFI with no OS
booted, this might not be an OS issue at all.
It can't be a docking / USB-C issue either, since the system sometimes
can't even switch to internal display and it also crashes with an
external monitor attached directly via HDM
The issue with monitors "dropping" appears to be fixed for me with the
latest firmware.
- UEFI Version 1.14 (R1CUJ72W), issued on 2022-07-29.
- USB-Docking (Gen 2) Firmware Version 1.1.18, issued on 2022-09-14.
However, I now have the issue of my Ethernet connection "dropping"
shortly after boot.
The issue appears to be fixed (at least for me) with the latest
firmware.
- UEFI Version 1.14 (R1CUJ72W), issued on 2022-07-29.
- USB-Docking (Gen 2) Firmware Version 1.1.18, issued on 2022-09-14.
(I'm on Ubuntu 22.04 LTS now though, no longer 20.04 LTS.)
The system now sporadically "drops" the
With kernel version 5.6.0-1048-oem, the stack trace looks different, but
the problem is still present.
[ 4881.023648] [ cut here ]
[ 4881.023782] WARNING: CPU: 1 PID: 1113 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_hwseq.c:1555
dcn20_program_front_end_for_ctx
Hi!
Are you sure this is not a hardware issue?
The reason I believe it is a hardware issue is because I observed my
system "drop monitors" on the docking station also under Windows 10 and
even while in the UEFI. Lenovo replaced both the motherboard and the
docking station (and I updated firmware
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