radeon_fbdev_river_fbdev: failed to initialize framebuffer and setup emulaton

[Alex Deucher]

On Sun, Aug 3, 2025 at 11:28 AM Christian Zigotzky
<chzigotzky at xenosoft.de> wrote:
>
> 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

This change just bumps the driver version it shouldn't affect the fbdev.

> -
> 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

This only affects acceleration, it should not affect fbdev.

What chip are you using?  Can you attach your full dmesg output?  Can
you bisect?  This cultrit could be a core drm change.

Alex

>
> 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
> >
>