Public bug reported:
I am on a fully updated (using Lenovo Vantage) Lenovo P1 Gen 2 (Quadro
T2000), a Thunderbolt 3 Workstation Dock Gen 2 (firmware sub-version 64)
and nVidia drivers 455 over Ubuntu 20.04 with kernel
5.4.85-050485-generic.
I can not log-in at all unless I have the Dock connected, for some strange
reason. After entering the password, with the laptop undocked, Ubuntu freezes -
the session will not start. (The mouse still moves, but the UI is no longer
responsive. Perhaps the system menus open, but no option has any effect).
In Windows, everything works fine.
Kernel 5.4.58 has the same issues. Oddly, in kernel 5.4.56 I can log in.
Changing the drivers to Nouveau meant I could log-in, but only one
external monitor worked (I have 2).
All of this with Kernel DMA Disabled and running at "No Security" to
make everything simpler.
What I ended up doing was:
Changed to nVidia drivers 418 (I lose the smart power management, so battery
time is terrible).
Thunberbolt 3 Security at "User Authorization" (for now).
Now, everything works (so far). Suspending works, resuming works, shutting off
works (all of these would sometimes freeze).
Changing back to 455 causes the issues to appear again.
** Affects: nvidia-graphics-drivers-455 (Ubuntu)
Importance: Undecided
Status: New
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to nvidia-graphics-drivers-455 in Ubuntu.
https://bugs.launchpad.net/bugs/1909244
Title:
Freeze after login
Status in nvidia-graphics-drivers-455 package in Ubuntu:
New
Bug description:
I am on a fully updated (using Lenovo Vantage) Lenovo P1 Gen 2 (Quadro
T2000), a Thunderbolt 3 Workstation Dock Gen 2 (firmware sub-version
64) and nVidia drivers 455 over Ubuntu 20.04 with kernel
5.4.85-050485-generic.
I can not log-in at all unless I have the Dock connected, for some strange
reason. After entering the password, with the laptop undocked, Ubuntu freezes -
the session will not start. (The mouse still moves, but the UI is no longer
responsive. Perhaps the system menus open, but no option has any effect).
In Windows, everything works fine.
Kernel 5.4.58 has the same issues. Oddly, in kernel 5.4.56 I can log in.
Changing the drivers to Nouveau meant I could log-in, but only one
external monitor worked (I have 2).
All of this with Kernel DMA Disabled and running at "No Security" to
make everything simpler.
What I ended up doing was:
Changed to nVidia drivers 418 (I lose the smart power management, so battery
time is terrible).
Thunberbolt 3 Security at "User Authorization" (for now).
Now, everything works (so far). Suspending works, resuming works, shutting
off works (all of these would sometimes freeze).
Changing back to 455 causes the issues to appear again.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-455/+bug/1909244/+subscriptions
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