Comment # 7
on bug 106544
from Andrei Slavoiu
I've encountered this with an RX 480 connected via DisplayPort as well: [55207.637429] WARNING: CPU: 3 PID: 2125 at drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services.h:132 generic_reg_update_ex+0x102/0x148 [55207.637431] Modules linked in: sr_mod cdrom [55207.637437] CPU: 3 PID: 2125 Comm: X Tainted: G W 4.17.2-gentoo #2 [55207.637438] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./FM2A88X Extreme6+, BIOS P4.20 01/13/2016 [55207.637440] RIP: 0010:generic_reg_update_ex+0x102/0x148 [55207.637440] RSP: 0018:ffffc90002ba3890 EFLAGS: 00010246 [55207.637442] RAX: ffffc90002ba38b0 RBX: ffff88043c4a8040 RCX: 0000000000000000 [55207.637442] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88043ca5a880 [55207.637443] RBP: ffffc90002ba3900 R08: 0000000000000000 R09: 0000000000000000 [55207.637444] R10: ffffc90002ba3918 R11: 0000000000000001 R12: 0000000000000001 [55207.637444] R13: 0000000000000000 R14: ffff88043caec000 R15: ffff88010b0f4188 [55207.637445] FS: 00007fc777d7b900(0000) GS:ffff88044ed80000(0000) knlGS:0000000000000000 [55207.637446] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [55207.637447] CR2: 00007fbdd0660a10 CR3: 0000000427b0c000 CR4: 00000000000406e0 [55207.637448] Call Trace: [55207.637453] dce110_stream_encoder_update_hdmi_info_packets+0x36f/0x590 [55207.637456] dce110_apply_ctx_to_hw+0x76e/0x8f8 [55207.637458] ? dc_commit_state+0x32d/0x5c8 [55207.637460] ? set_freesync_on_streams.part.6+0x48/0x240 [55207.637461] ? mod_freesync_set_user_enable+0x119/0x150 [55207.637464] ? amdgpu_dm_atomic_commit_tail+0x34b/0xce0 [55207.637467] ? _cond_resched+0x10/0x38 [55207.637468] ? wait_for_completion_timeout+0x35/0x180 [55207.637469] ? wait_for_completion_interruptible+0x30/0x1a0 [55207.637472] ? commit_tail+0x38/0x68 [55207.637473] ? drm_atomic_helper_commit+0xf7/0x100 [55207.637474] ? drm_atomic_helper_set_config+0x72/0x80 [55207.637477] ? __drm_mode_set_config_internal+0x62/0x110 [55207.637478] ? drm_mode_setcrtc+0x3ee/0x578 [55207.637480] ? drm_crtc_check_viewport+0xa8/0xa8 [55207.637481] ? drm_ioctl_kernel+0x56/0xa8 [55207.637483] ? drm_ioctl+0x2a0/0x340 [55207.637484] ? drm_crtc_check_viewport+0xa8/0xa8 [55207.637486] ? amdgpu_drm_ioctl+0x44/0x78 [55207.637489] ? do_vfs_ioctl+0x9f/0x610 [55207.637492] ? __sys_recvmsg+0x7e/0x98 [55207.637493] ? ksys_ioctl+0x35/0x60 [55207.637495] ? __x64_sys_ioctl+0x11/0x18 [55207.637497] ? do_syscall_64+0x50/0x150 [55207.637500] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [55207.637500] Code: 48 8b 40 08 e8 a0 1f 71 00 48 8b 75 a8 65 48 33 34 25 28 00 00 00 89 d8 75 18 48 83 c4 50 5b 41 5a 41 5c 41 5d 5d c3 0f 0b eb b4 <0f> 0b e9 43 ff ff ff e8 9a 0f 9c ff 41 ba 01 00 00 00 44 89 c0 [55207.637521] ---[ end trace b2eb025a41b6045f ]---
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