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[GH-ISSUE #242] Blank screen on Linux Mint Cinnamon #154

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opened 2026-10-18 14:06:33 +00:00 by bsakaguchi · 6 comments
bsakaguchi commented 2026-10-18 14:06:33 +00:00
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Originally created by @DomDXD on GitHub (Jul 17, 2026).
Original GitHub issue: https://github.com/open-webui/desktop/issues/242

I don't get this app. It's suppose to be a desktop version but it's not working for me.
I have all green, Open WebUI, Open Terminal and llama.cpp
I make a connection, the right side show a spinning circle for a very small fraction of a second then nothing, just black.
And I know it's working because if I click the 3 dots to my connection and select Open in Browser then I see the loaded model, the chat box everything is there, but in the app, nope
Can't even open the default Open WebUI too, same thing only works when I use Open is Browser.
That ain't working

edit:
I was able to get to work. Downloaded the repo, got the the AI to fix it. But there's no CUDA support which is not good. I'm not running a 30B model on CPU. So I have to run my llama-server, copy the URL in a new connection, then it works. But it's too much of a pain. I'll keep using my offline Python on.

Originally created by @DomDXD on GitHub (Jul 17, 2026). Original GitHub issue: https://github.com/open-webui/desktop/issues/242 I don't get this app. It's suppose to be a desktop version but it's not working for me. I have all green, Open WebUI, Open Terminal and llama.cpp I make a connection, the right side show a spinning circle for a very small fraction of a second then nothing, just black. And I know it's working because if I click the 3 dots to my connection and select Open in Browser then I see the loaded model, the chat box everything is there, but in the app, nope Can't even open the default Open WebUI too, same thing only works when I use Open is Browser. That ain't working edit: I was able to get to work. Downloaded the repo, got the the AI to fix it. But there's no CUDA support which is not good. I'm not running a 30B model on CPU. So I have to run my llama-server, copy the URL in a new connection, then it works. But it's too much of a pain. I'll keep using my offline Python on.
bsakaguchi commented 2026-10-18 14:06:34 +00:00
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@theminor commented on GitHub (Jul 25, 2026):

Same for me on Ubuntu. Seems to be the same issue as #215

<!-- gh-comment-id:5080903700 --> @theminor commented on GitHub (Jul 25, 2026): Same for me on Ubuntu. Seems to be the same issue as #215
bsakaguchi commented 2026-10-18 14:06:34 +00:00
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@DomDXD commented on GitHub (Jul 25, 2026):

yeah, version 0.0.20 was suppose to address this issue but still not working. But I'm on X11. I might try to download the repo and fix it myself. It's been a while and there's no replies on much of the issues here from them anyway...

<!-- gh-comment-id:5081104227 --> @DomDXD commented on GitHub (Jul 25, 2026): yeah, version 0.0.20 was suppose to address this issue but still not working. But I'm on X11. I might try to download the repo and fix it myself. It's been a while and there's no replies on much of the issues here from them anyway...
bsakaguchi commented 2026-10-18 14:06:34 +00:00
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@theminor commented on GitHub (Jul 26, 2026):

Update: it works with the .flatpak version, but not the .deb version. And the .AppImage won't install at all:

$ ./open-webui_x86_64.AppImage
[272778:0725/202537.189149:FATAL:sandbox/linux/suid/client/setuid_sandbox_host.cc:166] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_open-wHDHaNJ/chrome-sandbox is owned by root and has mode 4755.
Trace/breakpoint trap (core dumped)

(I'm also on x11)

<!-- gh-comment-id:5081201060 --> @theminor commented on GitHub (Jul 26, 2026): Update: it works with the `.flatpak` version, but not the `.deb` version. And the `.AppImage` won't install at all: ```bash $ ./open-webui_x86_64.AppImage [272778:0725/202537.189149:FATAL:sandbox/linux/suid/client/setuid_sandbox_host.cc:166] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_open-wHDHaNJ/chrome-sandbox is owned by root and has mode 4755. Trace/breakpoint trap (core dumped) ``` (I'm also on x11)
bsakaguchi commented 2026-10-18 14:06:34 +00:00
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@iamcolbyrobertson commented on GitHub (Jul 30, 2026):

I'm on Mint Cinnamon too and can't get the either the Flatpak or the .deb to work unless I pass --disable-gpu --no-sandbox.

<!-- gh-comment-id:5133189045 --> @iamcolbyrobertson commented on GitHub (Jul 30, 2026): I'm on Mint Cinnamon too and can't get the either the Flatpak or the .deb to work unless I pass `--disable-gpu --no-sandbox`.
bsakaguchi commented 2026-10-18 14:06:34 +00:00
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@cj-plusplus commented on GitHub (Aug 1, 2026):

I'm on CachyOS and I'm getting the same issue - main program window is blank, but I can open the local running instance in Firefox/Brave etc. and all is well

EDIT: if I run the AppImage version in the terminal I get this spam:

[637788:0801/182358.594287:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594320:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.nyFx3Q failed: No such process (3) [637788:0801/182358.594342:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594375:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.CBZpVa failed: No such process (3) [637788:0801/182358.594402:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594435:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.kZAqIk failed: No such process (3) [637788:0801/182358.594458:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594527:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.k5P4yk failed: No such process (3)

I can also confirm that @iamcolbyrobertson 's workaround works on my machine and the spam above disappears

<!-- gh-comment-id:5152531527 --> @cj-plusplus commented on GitHub (Aug 1, 2026): I'm on CachyOS and I'm getting the same issue - main program window is blank, but I can open the local running instance in Firefox/Brave etc. and all is well EDIT: if I run the AppImage version in the terminal I get this spam: `[637788:0801/182358.594287:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594320:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.nyFx3Q failed: No such process (3) [637788:0801/182358.594342:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594375:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.CBZpVa failed: No such process (3) [637788:0801/182358.594402:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594435:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.kZAqIk failed: No such process (3) [637788:0801/182358.594458:ERROR:base/memory/platform_shared_memory_region_posix.cc:217] Unable to access(W_OK|X_OK) /tmp: No such process (3) [637788:0801/182358.594527:ERROR:base/memory/platform_shared_memory_region_posix.cc:214] Creating shared memory in /tmp/.org.chromium.Chromium.k5P4yk failed: No such process (3) ` I can also confirm that @iamcolbyrobertson 's workaround works on my machine and the spam above disappears
bsakaguchi commented 2026-10-18 14:06:34 +00:00
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@plexosome commented on GitHub (Aug 21, 2026):

I have the same issue on Cinnamon Mint & on Tuxedo. The main window is blank.

<!-- gh-comment-id:5370399305 --> @plexosome commented on GitHub (Aug 21, 2026): I have the same issue on Cinnamon Mint & on Tuxedo. The main window is blank.
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