radeon_fbdev_river_fbdev: failed to initialize framebuffer and setup emulaton

[Christian Zigotzky]

Hello,

I have the same issue on another machine either. Blank screen during the 
boot. The Radeon graphics framebuffer device doesn't work anymore.

Here is the modifed code from the DRM updates (drm-next-2025-07-30):

- 
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/diff/drivers/gpu/drm/radeon/radeon_fbdev.c?id=260f6f4fda93c8485c8037865c941b42b9cba5d2
- 
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/diff/drivers/gpu/drm/radeon/radeon_drv.c?id=260f6f4fda93c8485c8037865c941b42b9cba5d2
- 
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/diff/drivers/gpu/drm/radeon/radeon_display.c?id=260f6f4fda93c8485c8037865c941b42b9cba5d2
- 
https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/diff/drivers/gpu/drm/radeon/evergreen_cs.c?id=260f6f4fda93c8485c8037865c941b42b9cba5d2

Do you have a patch for reverting these modifications? I would like to 
revert these modifications for testing.

Thanks in advance,
Christian

On 03 August 2025 at 1:35 pm, Christian Zigotzky wrote:
> Hello,
> 
> Xorg doesn't work after the DRM updates drm-next-2025-07-30.
> 
> Error messages:
> 
> [dr:.radeon_fbdev_river_fbdev_proe] *ERROR* failed to initialize 
> framebuffer -22
> radeon 0000:01:0.0: [drm] *ERRO* fbdev: Failedto setup emulaton (ret=-22)
> brd module loadedm
> lop: module loadd
> mpt3ss version 52.10.00.00 loaded
> nve nvme0: pci fuction 0002:04:0.0
> fsl-sata ffe20000.sata: SataFSL Platform/CS Driver init
> scs host0: sata_fs
> ta1: SATA max DMA/133 irq 68 pm-pol 0
> ;21;39mfsl-sat ffe221000.sata Sata FSL Platfrm/CSB Driver iit
> ata1: Signatue Update detectd @ 0 msecs
> scsihost1: sata_fsl[0m
> ta2: SATA max UMA/133 irq 69 lm-pol 0
> nvme nvm0: 4/0/0 defaul/read/poll queus
> nvme0n1: p1 p p3 p4 p5 p6 p7[0m
> drm:.radeon_fbdv_driver_fbdev_robe] *ERROR* filed to initialze 
> framebuffer 22
> fsl_dpaa_mac fe4e6000.ethernt: of_get_mac_adress(/soc at ffe00000/ 
> fman at 40000/ethernet at e6000 failed
> radeon 000:01:00.0: [dr] *ERROR* fbdev Failed to setu emulation (ret-22)
> fsl_dpaa_ma ffe4e6000.ethenet: FMan MEMAC[0m
> sl_dpaa_mac ffee6000.ethernet:Using random MA address: 0e
> 
> Could you please check the latest DRM updates?
> 
> Thanks,
> Christian
>