(Solved) video hardware acceleration error message

[hag6]

Noob in need of help. I recently installed Cinnamon 20.02. When using Celluloid for video playback either the app would play for a few seconds before vanishing or freeze the entire system. At the time I was using the nouveau driver for the GeForce GTX 1050 Ti gpu. I suspected the driver may be causing the issue so I changed the driver to nvidia v: 470.74 as offered by the Device Manager. After installing and restarting the following message is displayed:

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"Check your video drivers - your system is currently running without video  hardware acceleration"

I tried Celluloid with the Nvidia driver and it played without crashing but playback is very glitchy. I need to rectify this but have no idea how.

Any help gratefully appreciated

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inxi -b
System:
  Host:  Kernel: 5.4.0-88-generic x86_64 bits: 64 Desktop: Cinnamon 5.0.6 
  Distro: Linux Mint 20.2 Uma 
Machine:
  Type: Desktop Mobo: Gigabyte model: GA-MA790FXT-UD5P v: x.x 
  serial: <superuser/root required> BIOS: Award v: F8n date: 01/07/2011 
CPU:
  Quad Core: AMD Phenom II X4 955 type: MCP speed: 3200 MHz 
  min/max: 800/3200 MHz 
Graphics:
  Device-1: NVIDIA GP107 [GeForce GTX 1050 Ti] driver: nvidia v: 470.74 
  Display: x11 server: X.Org 1.20.11 driver: fbdev,modesetting,nouveau 
  unloaded: vesa resolution: 1680x1050~77Hz 
  OpenGL: renderer: llvmpipe (LLVM 12.0.0 128 bits) v: 4.5 Mesa 21.0.3 

I tried to uninstall xserver-xorg-video-fbdev but this failed. A failed attempt to load then uninstall the latest kernel 5.11.0-37 is causing additional problems

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$ sudo apt-get remove xserver-xorg-video-fbdev
[sudo] password for h:      
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following package was automatically installed and is no longer required:
  linux-hwe-5.11-headers-5.11.0-37
Use 'sudo apt autoremove' to remove it.
The following packages will be REMOVED
  linux-image-5.11.0-37-generic xserver-xorg-video-all xserver-xorg-video-fbdev
0 to upgrade, 0 to newly install, 3 to remove and 1 not to upgrade.
1 not fully installed or removed.
After this operation, 10.3 MB disk space will be freed.
Do you want to continue? [Y/n] y
(Reading database ... 343695 files and directories currently installed.)
Removing linux-image-5.11.0-37-generic (5.11.0-37.41~20.04.2) ...
/etc/kernel/postrm.d/initramfs-tools:
update-initramfs: Deleting /boot/initrd.img-5.11.0-37-generic
/etc/kernel/postrm.d/zz-update-grub:
Sourcing file `/etc/default/grub'
/usr/sbin/grub-mkconfig: 1: /etc/default/grub: you: not found
run-parts: /etc/kernel/postrm.d/zz-update-grub exited with return code 127
dpkg: error processing package linux-image-5.11.0-37-generic (--remove):
 installed linux-image-5.11.0-37-generic package post-removal script subprocess returned error exit status 1
dpkg: too many errors, stopping
Errors were encountered while processing:
 linux-image-5.11.0-37-generic
Processing was halted because there were too many errors.
E: Sub-process /usr/bin/dpkg returned an error code (1)

[SMG]

I think your problem is similar to the one in this topic [SOLVED] NVIDIA driver failing sometimes on boot ("no hardware acceleration"). Let us know if the fix roblm recommends in the second post addresses the issue for you.

[hag6]

Thank you so much for pointing in the direction of roblm's post. it worked! The renderer and Display Driver seem to be the key changes
This the updated inxi -b

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$ inxi -b
System:
  Host: Kernel: 5.4.0-88-generic x86_64 bits: 64 Desktop: Cinnamon 5.0.6 
  Distro: Linux Mint 20.2 Uma 
Machine:
  Type: Desktop Mobo: Gigabyte model: GA-MA790FXT-UD5P v: x.x 
  serial: <superuser/root required> BIOS: Award v: F8n date: 01/07/2011 
CPU:
  Quad Core: AMD Phenom II X4 955 type: MCP speed: 800 MHz 
  min/max: 800/3200 MHz 
Graphics:
  Device-1: NVIDIA GP107 [GeForce GTX 1050 Ti] driver: nvidia v: 470.74 
  Display: x11 server: X.Org 1.20.11 [b]driver: nvidia [/b]
  unloaded: fbdev,modesetting,nouveau,vesa resolution: 1680x1050~60Hz 
  [b]OpenGL: renderer: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2 [/b]
  v: 4.6.0 NVIDIA 470.74 
) 
  Shell: bash inxi: 3.0.38