GDM failed to start

[Sampson Fung]

The screen is hang on a text mode, all black with only the cursor blinking at the upper left corner.

Ctrl+Alt+F3 switching works, and sway can be started without issues.

Yesterday still worked normally, but after some update, it shows this problem.

Silverblue Rawhide.20210511.n.2 is working (double checked with fresh install)
Silverblue 34.20210516.0 failed

https://bugzilla.redhat.com/show_bug.cgi?id=1960937
_______________________________________________
users mailing list -- ***@lists.fedoraproject.org
To unsubscribe send an email to users-***@lists.fedoraproject.org
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/***@lists.fedoraproject.org
Do not reply to spam on the list, report it: https://pagure.io/fedora

[Sampson Fung]

It turns out the problem is with the radeon driver.

The GDM can be started normally once amdgpu is used instead of radeon

$ cat /proc/cmdline
BOOT_IMAGE=(hd0,gpt3)/ostree/fedora-b84e4d88fe04fad4bc33b6ea17b973b4c73cd56c60843527323ed31290b71b6c/vmlinuz-5.11.20-300.fc34.x86_64 root=UUID=6d7c04a4-98c4-4438-96f8-b3fcd570c27a rootflags=subvol=root35b ostree=/ostree/boot.0/fedora/b84e4d88fe04fad4bc33b6ea17b973b4c73cd56c60843527323ed31290b71b6c/0 radeon.cik_support=0 amdgpu.cik_support=1

00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kaveri [Radeon R7 Graphics] (prog-if 00 [VGA controller])
Subsystem: Gigabyte Technology Co., Ltd Device d000
Flags: bus master, fast devsel, latency 0, IRQ 46, IOMMU group 0
Memory at c0000000 (64-bit, prefetchable) [size=256M]
Memory at d0000000 (64-bit, prefetchable) [size=8M]
I/O ports at f000 [size=256]
Memory at feb00000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Capabilities: [58] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [270] Secondary PCI Express
Capabilities: [2b0] Address Translation Service (ATS)
Capabilities: [2c0] Page Request Interface (PRI)
Capabilities: [2d0] Process Address Space ID (PASID)
Kernel driver in use: amdgpu
Kernel modules: radeon, amdgpu
_______________________________________________
users mailing list -- ***@lists.fedoraproject.org
To unsubscribe send an email to users-***@lists.fedoraproject.org
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/***@lists.fedoraproject.org
Do not reply to spam on the list, report it: h

[Sampson Fung]

Solution:
https://bugzilla.redhat.com/show_bug.cgi?id=1960937#c12
_______________________________________________
users mailing list -- ***@lists.fedoraproject.org
To unsubscribe send an email to users-***@lists.fedoraproject.org
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/***@lists.fedoraproject.org
Do not reply to spam on the