radeon_fbdev_river_fbdev: failed to initialize framebuffer and setup emulation

[Christian Zigotzky]

On 07 August 2025 at 04:21 pm, Limonciello, Mario <Mario.Limonciello at amd.com> wrote:

Does applying
https://github.com/torvalds/linux/commit/907a7a2e5bf40c6a359b2f6cc53d6fdca04009e0
help?

- - -

Hello Mario,

Thanks a lot for your patch.

I tested it today but unfortunately it doesn’t solve the issue with the Radeon framebuffer.

I have created two kernels with and without the drm-next-2025-07-30 updates [1] because of the issue with the Radeon graphics framebuffer device #15. [2]

Download and further information: https://github.com/chzigotzky/kernels/releases/tag/v6.17.0-alpha5

I have tested both kernels this week and I can definitely confirm, that the issue is somewhere in the commit drm-next-2025-07-30 updates [1].

The Radeon graphics framebuffer doesn't work with the kernel with the drm-next-2025-07-30 updates [1]. Without these updates, the framebuffer works.

I bisected yesterday. [2]

There are some other user reports:

- https://forum.hyperion-entertainment.com/viewtopic.php?p=60606#p60606
- https://forum.hyperion-entertainment.com/viewtopic.php?p=60595#p60595

They use other Radeon graphics chips.

@All
Please check the drm-next-2025-07-30 updates [1]

Thanks,
Christian

[1] https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=260f6f4fda93c8485c8037865c941b42b9cba5d2

[2] https://github.com/chzigotzky/kernels/issues/15