I'm on Ubuntu 20.10, default desktop, nvidia-driver-460, Quadro M1200
GPU, and VLC also crashes for me whenever I try to take a snapshot.

However, I don't get the gl information logs mentioned by OP, is just
says "segmentation fault".

I tried reverting to 450, and it still segfaults.

The `--verbose 2` messages corresponding to me clicking the take
snapshot button in both cases are:

```
[00007f23600013b0] main vout display debug: VoutDisplayEvent 'mouse button' 2 
t=6
[00007f23600013b0] main vout display debug: VoutDisplayEvent 'mouse button' 2 
t=7
[00007f23600013b0] main vout display debug: auto hiding mouse cursor
[000055c87ad2f7e0] pulse audio output debug: suspended
[000055c87ad2f7e0] pulse audio output debug: changing sink 0: 
alsa_output.pci-0000_00_1f.3.analog-stereo (Built-in Audio Analogue Stereo)
[00007f23a40c2d80] main encoder debug: looking for encoder module matching 
"any": 21 candidates
[00007f23a40c2d80] main encoder debug: using encoder module "png"
[00007f23a4708060] main filter debug: looking for video converter module 
matching "any": 23 candidates
[00007f23a4708060] swscale filter debug: 1280x720 (1280x736) chroma: I420 -> 
1280x720 (1280x720) chroma: RV24 with scaling using Bicubic (good quality)
[00007f23a4708060] main filter debug: using video converter module "swscale"
Segmentation fault (core dumped)
```

Also like OP mentioned, PrtSc does not work on full screen. Outside of
full screen it works.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to nvidia-graphics-drivers-460 in Ubuntu.
https://bugs.launchpad.net/bugs/1913633

Title:
  nvidia-graphics-drivers-460 causes vlc to crash when taking video
  snapshot

Status in nvidia-graphics-drivers-460 package in Ubuntu:
  Confirmed

Bug description:
  vlc 3.0.11.1-2 would happily take video snapshots with version 450
  (and earlier) of the drivers, but crashes instantly every time with
  460.

  me@mine ~$ vlc
  VLC media player 3.0.11.1 Vetinari (revision 3.0.11.1-0-g52483f3ca2)
  [000055acea1745b0] main libvlc: Running vlc with the default interface. Use 
'cvlc' to use vlc without interface.
  [000055acea213580] main playlist: playlist is empty
  (** attempt to take snapshot via GUI **)
  libEGL warning: DRI2: failed to authenticate
  [00007f7f840045f0] gl gl: Initialized libplacebo v2.72.0 (API v72)
  [00007f7f840045f0] glx gl error: cannot create GLX context
  libEGL warning: DRI2: failed to authenticate
  [00007f7f840045f0] gles2 gl: Initialized libplacebo v2.72.0 (API v72)
  libEGL warning: DRI2: failed to authenticate
  [00007f7f840045f0] gl gl: Initialized libplacebo v2.72.0 (API v72)
  Segmentation fault (core dumped)

  Using PrtSc to get a screenshot works, but doesn't capture the video
  shown in the vlc window.

  Ubuntu MATE 20.10, kernel 5.8.0-41-generic.
  nvidia-driver-460 460.32.03-0ubuntu0.20.10.1

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-460/+bug/1913633/+subscriptions

-- 
Mailing list: https://launchpad.net/~kernel-packages
Post to     : [email protected]
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to