radeon_fbdev_river_fbdev: failed to initialize framebuffer and setup emulation

[Christian Zigotzky]

FYI: We are using PowerPC machines.

+ dri-devel

> On 03 August 2025 at 05:28 pm, 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
> - 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
>