radeon_fbdev_river_fbdev: failed to initialize framebuffer and setup emulation

[mad skateman]

I am using the R580 chip which is the Radeon X1950 XT.

The board i am using is a T1042 PowerPC based one with e5500 core.

I also lost the ability to start Xorg and therefore just a blank screen.

Dave





Op ma 4 aug 2025, 18:04 schreef Christian Zigotzky <chzigotzky at xenosoft.de>:

>
> On 04 August 2025 at 04:42 pm, Alex Deucher wrote:
> > 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
> >>>
> >>
>
> Hello Alex,
>
> Thanks for your answer.
>
> I use a BARTS chip (Radeon HD6870). I would like to bisect but I don't
> have time for it currently. Sorry
>
> 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.
>
> Bug report: https://github.com/chzigotzky/kernels/issues/15
>
> What do you think about the following commit?
>
> Link:
>
> https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0e7d5874fb6b80c44be3cfbcf1cf356e81d91232
>
> @Hypex
> Could you please attach your full dmesg output?
>
> Thanks,
> Christian
>
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