Re: [6.12.61 lts] [amdgpu]: regression: broken multi-monitor USB4 dock on Ryzen 7840U

[Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>]

Hi Peter,

On 09/12/25 15:00, Péter Bohner wrote:
> Hi Harshit,
> 
> sorry for the late reply (and replying privately at first),
> I had to wait for the release.
> 

Np!

> Unexpectedly, this is NOT fixed, persisting in 6.12.61, same trace.
>

Sorry I guessed it based on the fixes that went into 6.12.61. Sorry 
about the incorrect guess.

I don't know if this is a known issue then. Couple of thing I would try is:

1. Is this reproducible on MAINLINE 6.18 ?
2. Can you bisect the cause between 6.12.59 and 6.12.60 ? (using git 
bisect) - Documentation: https://docs.kernel.org/admin-guide/bug-bisect.html

thanks,
Harshit

> regards,
> ~Peter
> 
> On 05/12/2025 19:10, Harshit Mogalapalli wrote:
>> Hi,
>>
>> On 05/12/25 20:52, Péter Bohner wrote:
>>> upgrading from 6.12.59 to 6.12.60 broke my USB4 (Dynabook Thunderbolt 
>>> 4 Dock)'s video output with my Framework 13 (AMD Ryzen 7840U / Radeom 
>>> 780M igpu) .
>>> With two monitors plugged in, only one of them works, the other 
>>> (always the one on the 'video 2' output) remains blank (but receives 
>>> signal).
>>>
>>> relevant dmesg [note: tainted by ZFS]
>>> (full output at: https://gist.github.com/x- 
>>> zvf/128d45d028230438b8777c40759fa997):
>>>
>>
>> Just a note:
>>
>> This looks related to whats fixed in 6.12.61:
>>
>> https://lore.kernel.org/ 
>> stable/20251203152345.111596485@linuxfoundation.org/
>>
>> Try with 6.12.61 maybe ?
>>
>> Thanks,
>> Harshit
>>
>>>
>>> [drm:amdgpu_dm_process_dmub_aux_transfer_sync [amdgpu]] *ERROR* 
>>> wait_for_completion_timeout timeout!
>>> ------------[ cut here ]------------
>>> WARNING: CPU: 15 PID: 3064 at drivers/gpu/drm/amd/amdgpu/../display/ 
>>> dc/ link/hwss/link_hwss_dpia.c:49 
>>> update_dpia_stream_allocation_table+0xf2/0x100 [amdgpu]
>>> Modules linked in: hid_logitech_hidpp hid_logitech_dj snd_seq_midi 
>>> snd_seq_midi_event uvcvideo videobuf2_vmalloc uvc videobuf2_memops 
>>> snd_usb_audio videobuf2_v4l2 videobuf2_common snd_usbmidi_lib snd_ump 
>>> videodev snd_rawmidi mc cdc_ether usbnet mii uas usb_storage ccm 
>>> snd_seq_dummy rfcomm snd_hrtimer snd_seq snd_seq_device tun 
>>> ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_multiport 
>>> xt_cgroup xt_mark xt_owner xt_tcpudp ip6table_raw iptable_raw 
>>> ip6table_mangle iptable_mangle ip6table_nat iptable_nat nf_nat 
>>> nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c crc32c_generic 
>>> ip6table_filter ip6_tables iptable_filter uhid cmac algif_hash 
>>> algif_skcipher af_alg bnep vfat fat amd_atl intel_rapl_msr 
>>> intel_rapl_common snd_sof_amd_acp70 snd_sof_amd_acp63 
>>> snd_soc_acpi_amd_match snd_sof_amd_vangogh snd_sof_amd_rembrandt 
>>> snd_sof_amd_renoir snd_sof_amd_acp snd_sof_pci snd_sof_xtensa_dsp 
>>> snd_sof mt7921e snd_sof_utils mt7921_common snd_pci_ps mt792x_lib 
>>> snd_hda_codec_realtek snd_amd_sdw_acpi soundwire_amd kvm_amd
>>>   mt76_connac_lib snd_hda_codec_generic soundwire_generic_allocation 
>>> snd_hda_scodec_component snd_hda_codec_hdmi mousedev mt76 
>>> soundwire_bus snd_hda_intel kvm snd_soc_core snd_intel_dspcfg 
>>> irqbypass snd_intel_sdw_acpi mac80211 snd_compress ac97_bus 
>>> crct10dif_pclmul hid_sensor_als snd_pcm_dmaengine snd_hda_codec 
>>> crc32_pclmul hid_sensor_trigger crc32c_intel snd_rpl_pci_acp6x 
>>> industrialio_triggered_buffer snd_acp_pci polyval_clmulni kfifo_buf 
>>> snd_hda_core snd_acp_legacy_common polyval_generic libarc4 
>>> hid_sensor_iio_common industrialio ghash_clmulni_intel leds_cros_ec 
>>> cros_ec_sysfs cros_ec_hwmon cros_kbd_led_backlight 
>>> cros_charge_control led_class_multicolor gpio_cros_ec cros_ec_chardev 
>>> cros_ec_debugfs sha512_ssse3 snd_hwdep snd_pci_acp6x hid_multitouch 
>>> joydev spd5118 hid_sensor_hub cros_ec_dev sha256_ssse3 snd_pcm btusb 
>>> cfg80211 sha1_ssse3 btrtl aesni_intel snd_pci_acp5x btintel snd_timer 
>>> snd_rn_pci_acp3x sp5100_tco gf128mul ucsi_acpi crypto_simd btbcm 
>>> snd_acp_config snd amd_pmf typec_ucsi cryptd snd_soc_acpi
>>>   i2c_piix4 btmtk bluetooth rapl wmi_bmof pcspkr typec k10temp 
>>> thunderbolt amdtee soundcore ccp snd_pci_acp3x i2c_smbus rfkill roles 
>>> cros_ec_lpcs i2c_hid_acpi amd_sfh cros_ec platform_profile i2c_hid 
>>> tee amd_pmc mac_hid i2c_dev crypto_user dm_mod loop nfnetlink 
>>> bpf_preload ip_tables x_tables hid_generic usbhid amdgpu zfs(POE) 
>>> crc16 amdxcp spl(OE) i2c_algo_bit drm_ttm_helper ttm serio_raw 
>>> drm_exec atkbd gpu_sched libps2 vivaldi_fmap drm_suballoc_helper nvme 
>>> drm_buddy i8042 drm_display_helper nvme_core video serio cec 
>>> nvme_auth wmi
>>> CPU: 15 UID: 1000 PID: 3064 Comm: kwin_wayland Tainted: P  OE 
>>> 6.12.60-1- lts #1 9b11292f14ae477e878a6bb6a5b5efc27ccf021d
>>> Tainted: [P]=PROPRIETARY_MODULE, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
>>> Hardware name: Framework Laptop 13 (AMD Ryzen 7040Series)/FRANMDCP07, 
>>> BIOS 03.16 07/25/2025
>>> RIP: 0010:update_dpia_stream_allocation_table+0xf2/0x100 [amdgpu]
>>> Code: d0 0f 1f 00 48 8b 44 24 08 65 48 2b 04 25 28 00 00 00 75 1a 48 
>>> 83 c4 10 5b 5d 41 5c 41 5d e9 10 ec e3 d9 31 db e9 6f ff ff ff <0f> 
>>> 0b eb 8a e8 05 09 c3 d9 0f 1f 44 00 00 90 90 90 90 90 90 90 90
>>> RSP: 0018:ffffd26fe3473248 EFLAGS: 00010282
>>> RAX: 00000000ffffffff RBX: 0000000000000025 RCX: 0000000000001140
>>> RDX: 00000000ffffffff RSI: ffffd26fe34731f0 RDI: ffff8bb78c7bb608
>>> RBP: ffff8bb7982c3b88 R08: 00000000ffffffff R09: 0000000000001100
>>> R10: ffffd27000ef9900 R11: ffff8bb78c7bb400 R12: ffff8bb7982ed600
>>> R13: ffff8bb7982c3800 R14: ffff8bb984e402a8 R15: ffff8bb7982c38c8
>>> FS:  000073883c086b80(0000) GS:ffff8bc51e180000(0000) 
>>> knlGS:0000000000000000
>>> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> CR2: 00002020005ba004 CR3: 000000014396e000 CR4: 0000000000f50ef0
>>> PKRU: 55555554
>>> Call Trace:
>>>   <TASK>
>>>   ? link_set_dpms_on+0x7a5/0xc70 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   link_set_dpms_on+0x806/0xc70 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   dce110_apply_single_controller_ctx_to_hw+0x300/0x480 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   dce110_apply_ctx_to_hw+0x24c/0x2e0 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   ? dcn10_setup_stereo+0x160/0x170 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   dc_commit_state_no_check+0x63d/0xeb0 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   dc_commit_streams+0x296/0x490 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? schedule_timeout+0x133/0x170
>>>   amdgpu_dm_atomic_commit_tail+0x6a1/0x3a10 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? psi_task_switch+0x113/0x2a0
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? schedule+0x27/0xf0
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? schedule_timeout+0x133/0x170
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? dma_fence_default_wait+0x8b/0x230
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? wait_for_completion_timeout+0x12e/0x180
>>>   commit_tail+0xae/0x140
>>>   drm_atomic_helper_commit+0x13c/0x180
>>>   drm_atomic_commit+0xa6/0xe0
>>>   ? __pfx___drm_printfn_info+0x10/0x10
>>>   drm_mode_atomic_ioctl+0xa60/0xcd0
>>>   ? sock_poll+0x51/0x110
>>>   ? __pfx_drm_mode_atomic_ioctl+0x10/0x10
>>>   drm_ioctl_kernel+0xad/0x100
>>>   drm_ioctl+0x286/0x500
>>>   ? __pfx_drm_mode_atomic_ioctl+0x10/0x10
>>>   amdgpu_drm_ioctl+0x4a/0x80 [amdgpu 
>>> d75f7e51e39957084964278ab74da83065554c01]
>>>   __x64_sys_ioctl+0x91/0xd0
>>>   do_syscall_64+0x7b/0x190
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? __x64_sys_ppoll+0xf8/0x180
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? syscall_exit_to_user_mode+0x37/0x1c0
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? do_syscall_64+0x87/0x190
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? do_syscall_64+0x87/0x190
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? do_syscall_64+0x87/0x190
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? do_syscall_64+0x87/0x190
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? do_syscall_64+0x87/0x190
>>>   ? srso_alias_return_thunk+0x5/0xfbef5
>>>   ? irqentry_exit_to_user_mode+0x2c/0x1b0
>>>   entry_SYSCALL_64_after_hwframe+0x76/0x7e
>>> RIP: 0033:0x738842d9b70d
>>> Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 
>>> 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> 
>>> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
>>> RSP: 002b:00007ffe3c7ed230 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
>>> RAX: ffffffffffffffda RBX: 0000634abd49c210 RCX: 0000738842d9b70d
>>> RDX: 00007ffe3c7ed320 RSI: 00000000c03864bc RDI: 0000000000000013
>>> RBP: 00007ffe3c7ed280 R08: 0000634abc4049bc R09: 0000634abce43e80
>>> R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3c7ed320
>>> R13: 00000000c03864bc R14: 0000000000000013 R15: 0000634abc404840
>>>   </TASK>
>>> ---[ end trace 0000000000000000 ]---
>>>
>>>
>>> regards,
>>> ~ Peter
>>>
>>>
>>>
>>>
>>