drmSetMaster failed: Device or resource busy

[K1D77A]

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Describe your issue

Hi,
I have been using xlibre for quite sometime and not so long ago I started running into an issue where I'd have to keep restarting my PC to get xlibre to start.
I am using Gentoo with OpenRC.
Kernel: 6.12.54-gentoo-dist
Mesa: 25.1.9
I have an amdgpu, mesa is compiled with radeon and amdgpu.
When this happens display manager crashes and XDM never starts. I would just have to reboot over and over until it eventually works. However this has now gotten to the point where I had restarted 20 times but still no XDM login screen. Just before submitting this I swapped back to xorg-server and my machine booted into XDM first try...
https://dpaste.com/47WNQVMSH
This is my Xorg.0.log that I took as a backup before I swapped back.
I tried launching xlibre as both root and as my user, in the case of my user I get permission denied, and in the case of root I have an output the same as the one provided.
I tried disabling display manager and launching manually, that also didn't work.
I also tried to compile xlibre with the debug flag to see if I get any extra error output and unfortunately there wasn't.
I also tried xlibre compiled with and without suid (it worked without before these issues). And its always been compiled with elogind.
I also have the amdgpu module loaded explicitly, that was one attempt I made to fix this.
Not sure what else I can do but I will help the best I can.
Thanks.

Steps to reproduce

Attempt to launch xlibre with my amdgpu.

What did you expect?

XDM to start so I can login and use my PC

Additional Information

No response

Extra fields

• I have checked the existing issues
• I have read the Contributing Guidelines
• I'd like to work on this issue

[cepelinas9000]

@K1D77A maybe you using same sort security module (apparmor or similar)? As reading your log, xlibre have no access to /dev/tty0 - it happens when it have limited permissions and with disabled (e)logind:

[2025-12-04 02:53:48] (==) Log file: "/var/log/Xorg.0.log", Time: Thu Dec  4 02:53:48 2025
[2025-12-04 02:53:48] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
...
[2025-12-04 02:53:48] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
...


[2025-12-04 02:53:48] (WW) xf86OpenConsole: setpgid failed: Operation not permitted
[2025-12-04 02:53:48] (WW) xf86OpenConsole: setsid failed: Operation not permitted

I

And could you post xorg-server log to crosscheck?

[stefan11111]

Looks like you are hitting #1505 (comment)
Does #1564 solve the issue?

[K1D77A]

@K1D77A maybe you using same sort security module (apparmor or similar)? As reading your log, xlibre have no access to /dev/tty0 - it happens when it have limited permissions and with disabled (e)logind:

[2025-12-04 02:53:48] (==) Log file: "/var/log/Xorg.0.log", Time: Thu Dec  4 02:53:48 2025
[2025-12-04 02:53:48] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
...
[2025-12-04 02:53:48] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
...


[2025-12-04 02:53:48] (WW) xf86OpenConsole: setpgid failed: Operation not permitted
[2025-12-04 02:53:48] (WW) xf86OpenConsole: setsid failed: Operation not permitted

I

And could you post xorg-server log to crosscheck?

https://dpaste.com/4WGYL5DAX Here is the log on x11. I'm not using anything other than elogind compiled with:

Looks like you are hitting #1505 (comment) Does #1564 solve the issue?

I would try but uh I dont know how to build from that commit using emerge. I'll try and figure it out and let you know

[stefan11111]

I would try but uh I dont know how to build from that commit using emerge. I'll try and figure it out and let you know

You can wget https://github.com/X11Libre/xserver/pull/1564.diff into /etc/portage/patches/x11-base/xlibre-server, and emerge as usual

[K1D77A]

I would try but uh I dont know how to build from that commit using emerge. I'll try and figure it out and let you know

You can wget https://github.com/X11Libre/xserver/pull/1564.diff into /etc/portage/patches/x11-base/xlibre-server, and emerge as usual

Okay got it. Trying it now

[stefan11111]

No, xlibre-server has to be a directory, and inside that you can put patches.
for portage to recognize the files in there as patches, they need to end in .patch or .diff.

[K1D77A]

No, xlibre-server has to be a directory, and inside that you can put patches. for portage to recognize the files in there as patches, they need to end in .patch or .diff.

Yeh I figured that out when I attempted to emerge. I have never done anything like this before

[K1D77A]

Okay, I rebooted with xlibre twice with no issues, made it to XDM straight away both times. So yes, I'd say that patch fixed it. https://dpaste.com/5S5TZTNK2 here is the log, just realized I forgot to remove the debug flag.