radeon flooding "flip queue failed" in Xorg and system log

[smesgr]

Hi,

I have installed Debian 12 on my old Fujitsu S920 with AMD GX-424CC.
After the installation completed, my logs are flooded by the following error messages:

dmesg:
[ 967.869183] radeon 0000:00:01.0: 000000003ba3c813 pin failed
[ 967.869212] [drm:radeon_crtc_page_flip_target [radeon]] *ERROR* failed to pin new rbo buffer before flip
[ 967.886254] radeon 0000:00:01.0: 0000000051be2216 pin failed
[ 967.886282] [drm:radeon_crtc_page_flip_target [radeon]] *ERROR* failed to pin new rbo buffer before flip
[ 967.907984] radeon 0000:00:01.0: 000000003ba3c813 pin failed
[ 967.908014] [drm:radeon_crtc_page_flip_target [radeon]] *ERROR* failed to pin new rbo buffer before flip
[ 967.925551] radeon 0000:00:01.0: 0000000051be2216 pin failed[ 967.925580] [drm:radeon_crtc_page_flip_target [radeon]] *ERROR* failed to pin new rbo buffer before flip

Xorg.log
[ 47.777] (WW) RADEON(0): flip queue failed: Invalid argument
[ 47.777] (WW) RADEON(0): Page flip failed: Invalid argument[ 47.777] (EE) RADEON(0): present flip failed

lspci:
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R4/R5 Graphics] (rev 01) (prog-if 00 [VGA controller])
Subsystem: Fujitsu Technology Solutions Mullins [Radeon R4/R5 Graphics]
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 35
Region 0: Memory at f8000000 (64-bit, prefetchable) [size=64M]
Region 2: Memory at fc000000 (64-bit, prefetchable) [size=8M]
Region 4: I/O ports at f000 [size=256]
Region 5: Memory at feb00000 (32-bit, non-prefetchable) [size=256K]
Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [48] Vendor Specific Information: Len=08 <?>
Capabilities: [50] Power Management version 3
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1+,D2+,D3hot+,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [58] Express (v2) Root Complex Integrated Endpoint, MSI 00
DevCap: MaxPayload 256 bytes, PhantFunc 0
ExtTag+ RBE+ FLReset-
DevCtl: CorrErr- NonFatalErr- FatalErr- UnsupReq-
RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
MaxPayload 256 bytes, MaxReadReq 512 bytes
DevSta: CorrErr- NonFatalErr+ FatalErr- UnsupReq+ AuxPwr- TransPend-
DevCap2: Completion Timeout: Not Supported, TimeoutDis- NROPrPrP- LTR-
10BitTagComp- 10BitTagReq- OBFF Not Supported, ExtFmt+ EETLPPrefix+, MaxEETLPPrefixes 1
EmergencyPowerReduction Not Supported, EmergencyPowerReductionInit-
FRS-
AtomicOpsCap: 32bit- 64bit- 128bitCAS-
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis- LTR- 10BitTagReq- OBFF Disabled,
AtomicOpsCtl: ReqEn-
Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee08004 Data: 0023
Capabilities: [100 v1] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?>
Capabilities: [270 v1] Secondary PCI Express
LnkCtl3: LnkEquIntrruptEn- PerformEqu-
LaneErrStat: 0
Capabilities: [2b0 v1] Address Translation Service (ATS)
ATSCap: Invalidate Queue Depth: 00
ATSCtl: Enable-, Smallest Translation Unit: 00
Capabilities: [2c0 v1] Page Request Interface (PRI)
PRICtl: Enable- Reset-
PRISta: RF- UPRGI- Stopped+
Page Request Capacity: 00000020, Page Request Allocation: 00000000
Capabilities: [2d0 v1] Process Address Space ID (PASID)
PASIDCap: Exec+ Priv+, Max PASID Width: 10
PASIDCtl: Enable- Exec- Priv-
Kernel driver in use: radeon Kernel modules: radeon, amdgpu

I'm a bit confused. Is this an kernel issue, Xorg issue or something else?

kernel:
Linux debian 6.1.0-13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.55-1 (2023-09-29) x86_64 GNU/Linux

Xorg:
[ 33.144]
X.Org X Server 1.21.1.7
X Protocol Version 11, Revision 0
[ 33.144] Current Operating System: Linux debian 6.1.0-13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.55-1 (2023-09-29) x86_64
[ 33.144] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-6.1.0-13-amd64 root=UUID=4101c568-e073-42f4-8dfe-08373fceb13c ro quiet
[ 33.144] xorg-server 2:21.1.7-3 (https://www.debian.org/support)
[ 33.144] Current version of pixman: 0.42.2
[ 33.144] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version.

I searched bug tracker and could only find this issue: https://gitlab.freedesktop.org/xorg/driver/xf86-video-ati/-/issues/180 but I don't have a black screen. The system is rather sluggish but seems to work.
I did try older version of Debian back to 10.13. All have this issue. I'm very sure the eLux which came with the box did not have this.

Any hints where to go next is very appreciated.

Best Regards
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