1

As stated, when playing avi video files with vlc video player (no matter - fullscreen or windowed) after some time (10 to 30 minutes, seems to be somehow tied to screen dim):

  • picture on screen freezes
  • keyboard hangs
    • cant turn off numlock
    • ctrl+alt+whatever not working
  • sometimes I can move mouse, but it cannot interact with ubuntu top panel.
  • pressing power button has no effect
  • audio remains playing as normal (till the end of movie)

So that's not a kernel hang, and not an app hang... but UI + USB input freeze! THE Only way to continue look movie is to press reset button.

Browsing works well, no Chrome crashes, in-browser youtube could show videos for hours. There is enough memory, less than 20% used. none of 2GB swap used. Movie files are always in RAM (/mnt/tmp/somefile.mkv, on tmpfs), RAM was checked several times, memtest ok, Chrome tabs has NOT crashed even once!


H/W:

  • CPU: i7 920
  • RAM: 48 gigs ram
  • GPU: ATI R9 270 2Gb
  • monitor: 2k 75hz IPS panel, attached via DP1.2
  • usb 2.0 generic keyboard and mouse

S/W:

uname -a

Linux apc 4.18.0-22-generic #23~18.04.1-Ubuntu SMP Thu Jun 6 08:37:25 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a

Distributor ID: Ubuntu
Description:    Ubuntu 18.04.2 LTS
Release:    18.04
Codename:   bionic

vlc --version

VLC media player 3.0.7 Vetinari (revision 3.0.7-0-g86cee31)
VLC version 3.0.7 Vetinari (3.0.7-0-g86cee31)
Compiled by jenkins on e672859d050d (Jun  7 2019 10:27:35)
Compiler: gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10)

lshw -c video

  *-display                 
       description: VGA compatible controller
       product: Curacao XT / Trinidad XT [Radeon R7 370 / R9 270X/370X]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:03:00.0
       version: 00
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
       configuration: driver=amdgpu latency=0
       resources: irq:31 memory:d0000000-dfffffff memory:fbd80000-fbdbffff ioport:d000(size=256) memory:c0000-dffff

modinfo amdgpu | grep version

version:        5.0.19.20.7

Steps taken, to reproduce hang:

  • dowload Ubuntu 18.04.2 from ubuntu.com
  • Erase and Clean install (one partiton, minimal install + upgrades + 3rdparty)
  • amdgpu-pro (I need opencl) drivers 19.20 downloaded from their page
  • Installed with ./amdgpu-pro-install -y --opencl=pal,legacy
  • Reboot
  • sudo snap install VLC
  • Open avi file (xvid codec)
  • 20 minute = screen freeze, UI dead, only sound will remain playing till the end of movie.

Questions

  • What could be wrong?
  • How to investigate?
  • Has someone else encountered same problems with 18.04+vlc+amdgpu ?

Search effort taken

  • Found this, but it is related to nvidia hardware

  • Found this, but no solution was found


Temporary solution

sudo apt install mplayer mplayer-gui

This works great..

After a day of testing: Nope, it also could hang. Removing the VLC tag. Problem is somewhere in Ubuntu/Xorg/OpenGL/video drivers


Conclusions

I've found it much more convenient to use linux console for software building process, but its wet/unstable UX just've disappointed me, in its everyday/recreational use.

I just wanted to watch a movie! For a couple of days using it (I mean X.Org and ALSA) I alredy had to:

  • reinstall OS/gpu drivers couple of times
  • encounter dropouts/silence problems with "sound via display port"
  • numerous freezes and crashes of popular software

These two technologies, that are barebones of user interaction - are real beta-versions of something, that may be ever human-usable! Random freezes, screen-flashes, sound dropouts... 2019-th? Most user-friendly desktop distro? LOL.. that wood is too raw wet, to become a good easy-to-set fire yet, guys!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.