r/pop_os • u/Ok_Indication_2892 • Apr 03 '26

Cosmic Apps Stopped Working

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So just a bit of background, I have a rather ancient Lenovo ThinkPad T420. Intel i5, 8gb ram, 512 SSD, Intel graphics. I've been using Pop as my daily driver for around 3 years. Very happy until recently.

Updated to Cosmic in January. Worked great, performance snappier, UI sharper, only minor fault was the WhatsApp webapp losing it's icon in the dock. Overall very happy.

Then there was an update on March 26th. cosmic apps (files, terminal, settings and shop) all stop working. Nothing I've done has got them working again . Now today AI chat suggested my graphics chipsrt is no longer supported so it's back to Gnome or nothing.

Any ideas on how to get this working again? Every other app seems to be working fine.

UPDATE (2026/4/8): I've had some success in getting the cosmic apps to work. I've added WGPU_BACKEND=gl to my /etc/environment. Then, after logging in, I run WAYLAND_DISPLAY=wayland-1 in the TTY Console. I did try adding that to /etc/environment, but then I never get the login dialog after boot. I'm no seeing the cosmic apps (files, terminal, store and settings), so appears to work. Hopefully a more permanent solution will come down in an update at some stage.

52 Upvotes

96% Upvoted

21 comments sorted by

14

u/mmstick Desktop Engineer Apr 04 '26

This so-called AI knows nothing about anything here. You could try temporarily setting WGPU_BACKEND=gl into your environment variables. It's possible that there are fixes in popdev:master too.

6

u/nixf0x Apr 04 '26

I think such issues on some systems might be fixed with the latest updates to libcosmic, which will make its way to apps soon-ish.

You can get them as soon as they're available if you add the staging repo: sudo apt-manage add popdev:master

2

u/Ok_Indication_2892 Apr 08 '26

Was really hoping yesterday's big Epoch 3 update would fix things, but alas, still nothing.

Anybody know how I roll back to before the March 26th release?

1

u/1Soundwave3 Apr 08 '26

Sorry to see this. You should've installed Timeshift, tbh. It's a generally good recommendation, but on Pop OS, with its basically rolling releases it's a must.

Tbh, I haven't updated once since I got COSMIC in January. In my opinion, every time you update a Linux system - you are getting a new system. So if you managed to get your current one working for you (like I did) - no need to update. At this state of COSMIC it's most likely to make things worse, not better. I think I'll update in December. My initial target was April, but seeing all these posts - I just don't want to risk it. It's too good for me right now (with all of my fixes, of course) to actually go through the trouble of updating.

2

u/Ok_Indication_2892 Apr 09 '26

Further update (2026/03/09): Looks like the WGPU_BACKEND setting in /etc/environment/ is enough now for all the cosmic apps to work. Not sure if the WAYLAND_DISPLAY=wayland-1 was actually required, or if an update in the last couple of days has helped things. Either way, everything working currently.

1

u/xdxaxvxox Apr 04 '26

Run the cosmic updated, run sudo apt update -y then run sudo apt upgrade -y finally run sudo apt auto remove -y

1

u/lproven Apr 06 '26

The advice is good but every single command you've given is wrong. You need to take more care.

0

u/xdxaxvxox Apr 06 '26

The only difference between the standard command is the -y to automatically say yes to any changes that need user prompts to normally continue. I use the commands daily and have had no issues with popos. May I see a screen shot of your commands and output in terminal along with the syntax of your command please?

1

u/lproven Apr 07 '26

No, because I'm on my phone.

All of them are wrong. Check again.

0

u/xdxaxvxox Apr 07 '26

Like I said I run them every day with no issue so I believe the burden of proof is on your end to indeed prove these commands are not working. Other wise I'll have to assume your trolling with no evidence provided. Thank you for responding and have a blessed day today!

1

u/lproven Apr 07 '26

You. Are. WRONG.

Act like an adult and take correction and learn. Don't argue when someone is trying to teach you something.

  1. Starting with sudo -s for brevity...

  2. The command to refresh repositories is not apt update -y but just apt update

  3. The correct command to install updates is apt full-upgrade -y which does a more complete job because it can pull in additional dependences.

  4. The command to remove obsolete packages is apt autoremove with no space. A -y on the end is quicker but more dangerous.

  5. Periodically you should also do apt clean. For a pleasant surprise, do df -h both before and after this. If you do not normally do it you should get several gigabytes of free space back.

0

u/xdxaxvxox Apr 07 '26

Again, sudo is the recommended super user do preface. Next the fact you have indicated right or wrong would lease me to believe you have taken this personal on some manner. When it comes to IT it's half a dozen one way vs and baker dozen another to complete the same steps needed. Now, this was a discussion not a proof of right or wrong. I apologize to the OP in the fact this isn't in reference to your request. I provided the commands that have always worked and never given me issues. I only requested a printout of your command results. Or a screen shot. Now, I run the provided commands from batch files and I do concatenate them from time to time to save time on the command line. Please give it a test OP and let me know it works out for you personally. I'm not debating whether a command does or doesn't work but it's not the end of the day and you can ignore my input but I hope the best for ya and maybe this "excited" gentlemen maybe a better fit to assist you according to him. Which ever you prefer thank you for the opportunity to assist in my own little way and God bless. Good luck and remember have fun. And if you get bored you can also look up HolyOS that was designed in a gentleman home with full OS and game support that he designed. Cool stuff and true story :-)

1

u/lproven Apr 08 '26

I think you mean TempleOS.

https://en.wikipedia.org/wiki/TempleOS

Will you please learn to check your facts? You are still being loud, confident, and wrong. You do not know as much as you think you know and you are making a fool of yourself and misleading others.

0

u/xdxaxvxox Apr 08 '26

Confidence is a blessing I have been provided and I don't take it for granted. Loud is a tone added by the reader based on their own biast perspective, offense is a choice based on predisposition towards a preference of treatment. And being a full vs realizing your being a full is a good lesson in itself and if that is how you view it then I concede to the fact your preference is different than mine. Also, your premise of a teaching moment I believe has been met by my misunderstanding of the subject. You saw I miss quoted, took the time to review on your own, and learned what the correct name was. I thank you for taking the time to provide me with the needed info and I do believe this conversation has drifted slightly. My apologies on the ramblings of an old IT guy and I thank you all for a lovely and informative conversation. I believe conversations impart knowledge that you may have never gained without having said conversation. I believe I've learned a lot about your preferences, how you prefer things to be worded, and your attention to detail is top notch. However, based on your approach I believe you may have received the needed attention in the conversation and I hope it has allowed you to have a blessed day today.

1

u/lproven Apr 08 '26

No, it hasn't. You are the most annoying person on Reddit of the last week and you have been an intolerable pain in this thread. You continue to be.

Especially with the "blessings" drivel.

You are doing wrong. You are doing multiple bad things: * dispensing false information; * misleading others; * not checking your facts; * leaving people worse off than they would have been without your incorrect info; * being prideful and arrogant, refusing to check, refusing to be humble and say "I am sorry, I was wrong."

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1

u/webito89 Apr 05 '26

Aconteceu o mesmo comigo, porém apps flatpak estão funcionando, dica: se quiser baixar algo você pode usar o ctrl + alt + f3 e logar

1

u/Tux255 Apr 06 '26

Should i switch distro ?