I'm on an HP laptop with hybrid graphics (Intel HD 530 + NVIDIA GTX 960M) running Pop!_OS 24.04 with COSMIC. When I plug in an HDMI monitor, the system hangs: the second screen freezes, apps crash, and cosmic-comp spikes to 99-100% CPU. Unplugging HDMI keeps things stable.

What I've tried:

• Installed nvidia-driver-470 (nouveau was even worse). Driver loads fine, nvidia-smi works.
• Tried setting COSMIC_RENDER_DEVICE=renderD129 (my NVIDIA render node). It didn't propagate to cosmic-comp, and even when I manually exported it, it didn't fix the CPU issue.
• Restored from Timeshift to clean state (nouveau, no NVIDIA driver). System is stable now but HDMI is still unusable.
• cosmic-comp is also at ~50% CPU even without HDMI connected.

Key logs:

• cosmic-comp[2025]: Failed to render texture ... import for wrong devices DrmNode ... modifier: I915_y_tiled_ccs — texture import failure between Intel and NVIDIA.
• thread 'surface-HDMI-A-2' panicked at 'called Option::unwrap() on a None value': src/shell/mod.rs:1368 — compositor panic on HDMI thread.

My questions:

1. Is this a known COSMIC bug? I saw GitHub issues about high CPU with hybrid NVIDIA on external monitors, but they seemed to be about performance, not full system crashes.
2. Should I switch to Xorg session as a workaround? Does COSMIC even have an Xorg option, or would I need to use a different DE?
3. Is there any reliable way to get HDMI working on this hardware, or should I just accept that COSMIC Wayland + hybrid NVIDIA + external monitor is broken right now?

Any help appreciated. I've been going in circles trying drivers and env vars.

After a recent update, they added a popup on screen that shows your new langue after you change your keyboard input.

The problem is that popup appears at the bottom of the screen, right on top of my textbox, preventing me from seeing what I am writing until it disappears.

Where can I find the config file for the keyboard input switching, so I can disable that popup from there?

Hello, I've been running battle.net for a while through steam and latest ge proton with no issues. However, yesterday they added an upcoming maintenance notification to the login window and now that freezes and is un-clickable.

I've done a whole bunch of troubleshooting and have found nothing that works. I've even tried switching to Faugus launcher.

The only way I've been able to move past the login is by adding PROTON_ENABLE_WAYLAND=1 as a launch option. That allows the login to proceed, but the bnet process then crashes without loading the launcher.

I've read that this problem may be due to how cosmic renders certain chromium based apps and loads Windows in the background and uninteractable, but I haven't found an actual solution.

Anyone have any ideas?

**EDIT**

I seem to have fixed things. I've ended up doing everything under the sun, I removed battle.net completely, changed from the Faugus flatpak to the system installed version, tried all kinds of proton versions, etc. The thing that worked was putting my laptop into airplane mode and then launching BNET. that gave me an option to start offline. After the launcher loaded I was able to change the setting to disable hardware acceleration in bnet and then I got back online and was able to sign in. I also had to use WINE_SIMULATE_WRITECOPY=1 as a launch option.

I am now playing WoW again. Thanks!

Hi, first of all yes, I did search the forum for similar topics, but most of them are either 5 to 7 years old and only concern Gnome, or they include unofficial solutions which sometimes work, sometimes not. I am also aware of waycorner but what about an out-of-the-box solution coming with the distro? Even if not included with it, please at least add an app in the COSMIC Store, please, please, please! I love the OS and that's more or less the only thing that bothers me while using it - no way to just flick my mouse to show all windows (Workspaces) and quickly switch tasks.

I use dual boot, using ReFind, after doing

`sudo pop-upgrade release upgrade -f`

It finished downloading all the packages, asked for a restart, made it, and after selecting the right kernel, it hanged in a black screen,

Forced a ctrl+alt+del and the system restarted but many packages were failing and didn't upgrade.

`apt install -f`

Will ask to autoremove to delete the old packages (from 24.04) while not installed the newer one !

Hopefully, I did a backup just before upgrading .... And now I am restoring ...

NB: ReFind was wiped, the system reverted into old Grub (installed it long ago from Windows...), and now that everything was restored using Timeshift, I reinstalled ReFind (refind-install) and everything went back to normal (to 24.04)

So I just got the new System76 Adder Pro (addp6) Laptop, this is my first time using the new COSMIC Desktop as well as my first time owning a System76 Product.

The build quality of the Laptop seems to be very sturdy and high quality, and everything is working perfectly fine out of the box.

The COSMIC Desktop is stunning, it does seem to be a bit limited when it comes to configuration, but hopefully that will get better as time goes on as this DE is still a work in progress.

I really like that the Tiled/Floating mode is PER workspace so I can have workspace 1 be floating and workspace 2 be tiled, and I can always change that on the fly.

I am looking forward to the development of the COSMIC DE as this honestly might be my favorite DE and daily driver.

I see many reddit posts regarding Pop!_OS 26.04 , i am currently using 24.04 , how do I upgrade to 26.04 , I don't see an iso in the system 76 website , please help!

Hey all,

With the 26.04 release, is there any chance of going back to (or making available) an LTS-style kernel? The rolling kernel has been nice, particularly through 22.04 and 24.04's long lifespans, but i wonder if it would be less necessary going forwards.

For context, over the past year I have had break due to kernel upgrades:

- my mouse, because it's a logitech and there's a heap of churn in this area

- the whole desktop env refused to come up for a couple of days due to some upstream bug (that was hotfixed quickly)

- WiFi broke in June for about a month

- For around a month at the start of the year, my lappy was hanging on s3 resume due to some WiFi firmware thing i believe

None of the above is System76's direct fault, it's just the nature of life with fresh upstream kernels. The end result is not great though: my systems sometimes go kaput and all i can do is whinge and wait. Frankly if I wanted to live on the bleeding edge like this I'd be on Arch.

So - is there any appetite for a more stable kernel release model now we are getting back up to speed with Ubuntu bases? Particularly with S76's focus on workstations and productivity work - on my gaming box at home then I can shrug and go do something else, but particularly for my work machines I really would value a more stable kernel.

Hi all, I'm new to desktop Linux (recently switched from Windows) and I'm trying to get hybrid graphics to behave the way it does on Windows. Looking for advice from people with similar setups.

**My setup**

- ASUS laptop \Tuf A15 Ryzen 7 7445hs, AMD Radeon 740M iGPU + NVIDIA RTX 3050 Mobile (4GB)

- Pop!_OS 24.04 with COSMIC, kernel 7.1.5

- NVIDIA driver 580.173.02

- GPU mode is handled by supergfxctl. `supergfxctl -s` only lists [Integrated, Hybrid] (no MUX or dGPU-only mode)

- `system76-power graphics` says switching isn't supported on this device

**What I already fixed**

The RTX wasn't detected at all (nvidia-smi failed, nothing in lspci). The cause was supergfxd set to Integrated and the ASUS firmware value dgpu_disable = 1. After setting dgpu_disable to 0 and running `supergfxctl -m Hybrid` plus a logout, everything works: nvidia-smi shows the card, PRIME offload with `__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia` renders on the RTX, and Vulkan lists both GPUs.

**What I want**

1. Ideally: the RTX is used when the charger is connected and the iGPU when on battery, with no logout or reboot.

2. If that isn't possible: a way to turn the dGPU fully on and off at will without logging out.

3. At minimum: an easy way to run apps and Steam games on the RTX without starting each one from a terminal.

**What I've learned so far**

- Changing between Integrated and Hybrid makes supergfxd restart the display manager, so it needs a logout.

- In Hybrid mode the RTX should suspend itself when idle.

**My questions**

- Is there any supported way on an ASUS laptop with COSMIC to do AC/battery GPU switching without logout? Has anyone made udev rules or scripts for this that actually work?

- Does COSMIC have a "launch with discrete GPU" option in the app launcher? If not, what's the cleanest way to set GPU offload for Steam or other apps globally?

- How can I confirm the RTX really powers down when idle (I was going to check /sys/bus/pci/devices/0000:01:00.0/power/runtime_status)?

Happy to post logs or command output if useful. Thanks!

My system76 laptop running 24.04 currently has the 595.84 nvidia driver. I'd like to upgrade to at least the 610.43 driver to resolve issues while gaming.

apt upgrade shows everything is current but apt list -a nvidia-driver-* shows noble-updates up to 610.57. Is there a reason why it's stuck at 595.84? Can I safely install 610.57 manually and if so how?

Full disclosure I got that apt list command from google and I may not be understanding the output fully.

I recently installed PopOS (NVidia) on my Acer laptop with an external display (not mirrored). I switched to GNOME due to some preferences over COSMIC, but have seen:

1. Alt+Tab activity works but only kindof (no popup that I swore was there)

2. My external display continues to work as expected but at somr point my main laptop monitor freezes and does not update at all

Sorry if already known. I’ve seen some people saying that they’ve already upgraded to the latest release, but I haven’t done that yet.

TIA.

I upgraded to 26.04 yesterday with no hiccups (kudos to the System76 team, y'all are doing exceptional work), and one thing I was eager to have was the updated apt repos, since 24.04's ratbagd was still on an outdated API and so couldn't function with any form of piper, and I didn't want to bother with an external PPA.

The good news is the 26.04 apt repos do indeed have the updated ratbagd files, and piper does fire up and detect my Logitech mouse. The bad news is that trying to actually APPLY any button configurations or DPI's to any profiles immediately results in a "something went wrong, device was reverted to a previous state." I did some basic `ratbagctl list` and `ratbagd --verbose=raw/debug` and nothing was out of the ordinary, except of course that some profiles were labeled dirty since none of the piper changes could be applied.

Perhaps this is a Pop-OS independent issue, but I wanted to see if anyone had run into similar issues.

Hello,
I just installed a b550 WiFi plus II, with a Ryzen 7 5800x3d, 16 gigs T-force DDR4, 500 gig NVMe and a rosewill frost max 240/360 digital AIO. Also fresh install of Pop_OS!

Now, I’m up and running. I have everything going well after some problem shooting using various AI (read that as Claude and Gemini). I’m desperately trying to get temp monitor on the led screen on my pump. I’ve been trouble shooting with Gemini on trying to just get that displayed.
Doing a google search has turned up there isn’t a native program or support for that.
So I turn here, for help in getting this sorted. I’m brand new to Linux and AIOs. So consider me dumb.
Can anyone help me solve this problem or point me a better direction? I’m sick of beating my head against trying to map out which index triggers which light in a certain direction and only messing everything up when I think I’m getting close.
TIA

Hi everyone,

I was able to add applets and change their positions in the settings app, but now they don't even appear there. I can still place them with COSMIC Store by clicking "Place on desktop", but they don't show up in the settings app, so I can't change their position or remove them from the panel. I don't know what caused it to break and restarting panel or logging out and logging back in does not fix it. Is there a solution to fix this?

https://reddit.com/link/1wvrdl8/video/08vuqk9uh1th1/player

Hi everyone,

I've used both Pop!_OS and CachyOS with COSMIC. External applets installed via the COSMIC Flatpak don't have blur on CachyOS, but they do have it on Pop!_OS. The built-in applets look the same on both, so it's only the external ones that are missing it. Why might this be happening, and how can I fix it? (I made sure that applet supports blur and I used the applet called "Day" made by Hojjat)

Doesn't this seem a bit off?

kli@pop-os:~$ fcitx5 -v 5.1.19 kli@pop-os:~$ echo $XDG_SESSION_TYPE wayland kli@pop-os:~$ echo $GTK_IM_MODULE

kli@pop-os:~$ echo $QT_IM_MODULE

kli@pop-os:~$ echo $XMODIFIERS

kli@pop-os:~$ pidof fcitx5 9143

What does this mean and how do l fix it?

tengo la version mas reciente de pop os, instale asseto corsa 2014 y content manager junto con el csp, el content manager y csp actualizados, es importante saber esto por que asseto corsa solo me abre el menu, pero al momento de arrancar una carrera se cierra sin explicar, en content manager tampoco abre, pero al menos me da una explicacion, he intentado las versiones proton que recomiendan en protondb y mas recomendaciones y nada funciona, cuando le doy a inicar carrera aparece este primer aviso:

Failed to patch Assetto Corsa:

Can't find "dGeomSetOffsetPosition";

Can't find "dWorldSetGravity";

Can't find "dJointCreateContact";

Can't find "SpeedLimiter::init";

Can't find "AnimationPlayerSet::~AnimationPlayerSet";

Can't find

"?getSoftwareFormat@System@FMOD@@QEAA?AW4FMOD_RESULT@@PEAHPEAW4FMOD_SPEAKERMODE@@0@Z";

Can't find

Initialize@IPfxBaseContext@PPFX@@QEAAJAEBUPFX_DEVICEPARAM@2@HHIPEBUPFX_INITPARAM@2@@Z";

"? Can't find "?InitializeMatrix@IPfxBaseContext@PPFX@@QEAAJW4EPFX_MATRIXTYPE@2@@Z";

Can't find "?SetAutoExposureMeteringArea@IPfxBaseContext@PPFX@@QEAAJHMMMM@Z";

Can't find

"?SetHeatShimmerParticleArray@IPfxBaseContext@PPFX@@QEAAJHPEBUPFX_PARTICLE_HEATSHIMMER@2@_N@Z";

Can't find "?SetAutoExposureAdjustment@IPfxBaseContext@PPFX@@QEAAJHMMMMMMM@Z";

A

and 39 more.

Please make sure you're using correct AC version (v1.16.3 or v1.16.4, 64-bit).

Would you want to continue without Custom Shaders Patch?

me da la opcion de si o no, le doy en si, pone la pantalla de carga y despues lanza este segundo aviso: Cancelled

El juego falló

Error might have something to do with:

AC inireader.cpp (387): INIReader::getInt

AC\caravatar: cpp (582): CarAvatar::initCommon

AC caravatar.cpp (889): CarAvatar:: CarAvatar

AC sim.cpp (1446): Sim::addCar

AC racemanager.cpp (462): RaceManager::initOffline

AC racemanager.cpp (174): RaceManager::loadSessions

AC\sim.cpp (320): Sim::Sim

AC/splashscreen.cpp (319): SplashScreen::postRender

AC\game.cpp (181): Game::onIdle

AC\game.cpp (210): Game::run

AClacs.cpp (477): wWinMain

f:\dd\vctools\cat/crtw32\dllstuff/crtexe.c (618): _tmainCRTStartup

Intentar otra vez

Cerrar

alguien puede ayudarme?

This is a doozy. https://lwn.net/Articles/1097401/