Freeze after login
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| nvidia-graphics-drivers-455 (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
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-
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.
