diefis, can you please try reinstalling the xserver xorg drivers?
In terminal, please run
sudo apt-get install --reinstall xserver-xorg-video-intel xserver-xorg-core xserver-xorg-input-all
sudo dpkg-reconfigure xserver-xorg
HI,
thank for your help.
The first part went well, I see the movies but when I start from a stored movie it crashes …
This is what the terminal tell me when I run “sudo dpkg-reconfigure xserver-xorg”:
maurizio @ MSIMINICUBI3: ~ $ sudo dpkg-reconfigure xserver-xorg
dpkg-query: package “xserver-xorg” is not installed and no information is available
Use “dpkg --info” (= “dpkg-deb --info”) to scan the archives e
“dpkg --contents” (= “dpkg-deb --contents”) to list its contents.
/ usr / sbin / dpkg-reconfigure: xserver-xorg is not installed
The problem is come back …
What I have to do now?
Maurizio
Check for broken packages. The easy way is by using Synaptic. If you do not already have it:
sudo apt-get install synaptic
Open Synaptic and enter your password. When the GUI pops up, on the lower left, move to the “custom Filters” tab button.
Then above it, look for “Broken” and select that.
If Broken packages are displayed on the right, then right click them and select to remove, then select “apply” from the top Toolbar.
In terminal, please run
sudo apt clean
then run:
sudo apt-get install -y xserver-xorg-video-intel
Please relay if there are any errors during the install or if it successfully installs.
I installed synaptic and did as you told me.
There are no damaged or broken packages.
I then entered “sudo apt-get install -y xserver-xorg-video-intel” in the terminal (after “sudo apt clean” and it gave me as result:
maurizio @ MSIMINICUBI3: ~ $ sudo apt-get install -y xserver-xorg-video-intel
Reading package list … Done
Dependency tree generation
Read status information … Done
xserver-xorg-video-intel is already at the latest version (2: 2.99.917 + git20171229-1).
The following packages were installed automatically and are no longer required:
libllvm9 libxatracker2 x11-apps x11-session-utils xbitmaps xinit xinput
Use “sudo apt autoremove” to remove them.
0 updated, 0 installed, 0 to be removed and 1 not updated.
maurizio @ MSIMINICUBI3: ~ $
But the problem persists though …
Maurizio
Perhaps it is Mesa.
In terminal, add the repository
sudo add-apt-repository ppa:kisak/kisak-mesa
Then upgrade
sudo apt dist-upgrade
In terminal, run
glxgears
and please reply back if a pop up opens with an animation of gears running.
Done,
Sorry, how long do I have to run glxgears? I have to reboot, as the problem persists …?
I’m wondering if it is a graphics memory issue?
swarfendor437
So what could be the solution? You say that the graphics card memory is low?
Hi (a news …),
It is not possible that it is the video card memory, as the same video (identical format) in Ubuntu (of the VB virtual machine) works perfectly and the Video application does not crash … It is a problem related to zorin OS and drivers installed. Or to the player … in my opinion.
Maurizio
Can you provide us with the make and exact model of Notebookk? 
MSI Mini Pc Cubi 3 Silent S-031BEU Intel Core i7-7500U 2.5 GHz, 32GB RAM, 500GB SSD - Intel® HD Graphics 620 (KBL GT2). ZORIN OS 15.3 ULTIMATE.
OK, go to this site and scroll down to the Linux section and follow the terminal commands given there to establish how much of the 4 Gb RAM on board this rig is allocated to Graphics:
and report back the results. Thanks.
Searching this issue on the web, I find a lot of opened bug reports on the issue and very little offered in the way of solutions…
No matter what the hardware platform, (motherboard of dekstop, notebook, mini-pcs and their ilk) integrated graphics are bound to cause issues. in particular the last two items as you cannot change (usually) the built in graphics as they are soldered on - and no expansion slot - unless you are running a desktop tower pc.
swarfendor437
Here, I did as you told me …
Looking at that report it looks like you are limited to 256 Mb which will be taken from your system RAM, just like a notebook - that is quite low by modern standards. Just remember your cube was not built for Linux - however you could give AntiX 19 a go which only uses 256 Mb RAM when runnning and that is system RAM not graphics memory!
https://antixlinux.com/
Hi,
In my opinion you are wrong. I told you that with a virtual machine (72 mb dedicated graphics memory) everything works perfectly (ubuntu 20 identical player, identical video - 6.9 GB 4K Mozart-Requiem …) … Only with Zorin OS it doesn’t work … Anyway if you tell me that I have to change the OS, that’s fine … you give me back the 45 € I spent and the deal is done. I wrote on the forum why I like Zorin OS and consider it my favorite operating system. He has only one problem, the video player crashes, but only with zorin, with Ubuntu it doesn’t crash. so it’s not a video card problem … Now I see what I need to do.
Thank you, Maurizio
If you paid for the Ultimate version then you have access to support from the Devolopers - perhaps they can advise you where I could not - I don’t work for Zorin - I’m just a volunteer who also just happens to moderate on the forum and help where I can. I was surprised that you managed to play Ubuntu 20.04 in VM with 72 Mb Graphics - I always run VB with 128 Mb RAM. I’m yet to install a second Graphics Card in my rig so I can dedicate a full card to VM’s. I will PM AZorin and ask him to look into this for you.
Hi,
In some cases with Ubuntu it jerks, but it is a 4K video and it never crashes … If I use a normal video it is fine … Remember that I am a Mac User since 2006 and with Linux do you know what I can do? I had had a Mac Pro (2007) and I have a Mac Book Pro (2014) I don’t need AntiX … I’m new to Linux … and I still have to learn a lot. My next computer will be a 16" Mac Book Pro … Thanks Maurizio.
Maurizio, this whole time, I have been sifting through bug reports that I have found in searching this issue on the web.
Three are quite a lot, which you can search up, as well.
I have found references to a mesa conflict,t hat later was said was patched. Also to gstreamer, which is was closed due to being patched.
Some suggest that it is the kernel. I believe on Ubuntu 20.04, you would see 5.4.0-42 which is the same kernel I am running on my build of Zorin 15 lite.
Does that match your current kernel?
Like Swarfendor, I am not a developer. Just a member of the forum that tries to help where I can if I can. I have not supported development by choosing the Zorin Ultimate OS, so I try to give back for the free Zorin Lite I use by paying it forward on the forum. You however have supported Development and this means that the Zorin Team will put priority toward examining your issue with the OS.
Solving your problem with Totem helps make Zorin OS better. It helps find issues and squash them so that all users benefit.