nouveau 0000:05:00.0: timeout on HiFive SiFive Unmatched

[Heinrich Schuchardt]

Booting the SiFive Unmatched no output on the monitor was shown. Zillions of messages like the following were written:

[ +0.007867] ------------[ cut here ]------------
[ +0.000013] nouveau 0000:05:00.0: timeout
[ +0.000374] WARNING: CPU: 2 PID: 2028 at drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c:35 g84_bar_flush+0x11a/0x12a [nouveau]
[ +0.008579] Modules linked in: tls binfmt_misc nls_iso8859_1 snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_timer snd soundc>
[ +0.000245] CPU: 2 PID: 2028 Comm: kworker/2:3 Tainted: G W 6.5.0-17-generic #17.1.1~22.04.1-Ubuntu
[ +0.000011] Hardware name: SiFive HiFive Unmatched A00 (DT)
[ +0.000007] Workqueue: events drm_fb_helper_damage_work [drm_kms_helper]
[ +0.000715] epc : g84_bar_flush+0x11a/0x12a [nouveau]
[ +0.006843] ra : g84_bar_flush+0x11a/0x12a [nouveau]
[ +0.006368] epc : ffffffff026becf8 ra : ffffffff026becf8 sp : ffffffc80172b6c0
[ +0.000008] gp : ffffffff822603c8 tp : ffffffd89ae05100 t0 : ffffffff820bd738
[ +0.000006] t1 : 0000000000000000 t2 : 2d2d2d2d2d2d2d2d s0 : ffffffc80172b720
[ +0.000005] s1 : ffffffd887482000 a0 : 0000000000000000 a1 : 0000000000000000
[ +0.000006] a2 : 0000000000000000 a3 : 0000000000000000 a4 : 0000000000000000
[ +0.000006] a5 : 0000000000000000 a6 : 0000000000000000 a7 : 0000000000000000
[ +0.000005] s2 : 0000000000070000 s3 : ffffffd89d6d19b8 s4 : 0000000200000022
[ +0.000006] s5 : 0000000000000046 s6 : 0000000000000046 s7 : 0000000000000000
[ +0.000006] s8 : 1000000000000000 s9 : 0000100000000000 s10: ffffffc80172b9c8
[ +0.000006] s11: ffffffd887144000 t3 : 0000000000000000 t4 : 0000000000000000
[ +0.000006] t5 : 0000000000000000 t6 : ffffffc80172b4b8
[ +0.000004] status: 0000000200000100 badaddr: 0000000000000058 cause: 0000000000000003
[ +0.000010] [<ffffffff026becf8>] g84_bar_flush+0x11a/0x12a [nouveau]
[ +0.006810] [<ffffffff026be1e0>] nvkm_bar_flush+0x1a/0x2c [nouveau]
[ +0.006619] [<ffffffff02706a64>] nv50_instobj_release+0x34/0x90 [nouveau]
[ +0.006681] [<ffffffff02713390>] gf100_vmm_pgt_mem+0x11a/0x1c0 [nouveau]
[ +0.006721] [<ffffffff0270e294>] nvkm_vmm_iter.constprop.0+0x37e/0x44e [nouveau]
[ +0.006638] [<ffffffff0270e4e0>] nvkm_vmm_ptes_get_map+0x36/0x98 [nouveau]
[ +0.006891] [<ffffffff0270e6d2>] nvkm_vmm_map_locked+0x190/0x2bc [nouveau]
[ +0.006817] [<ffffffff0270fa16>] nvkm_vmm_map+0x46/0x7e [nouveau]
[ +0.006676] [<ffffffff026e62e0>] nvkm_vram_map+0x68/0x98 [nouveau]
[ +0.006690] [<ffffffff0270cba4>] gf100_mem_map+0x98/0x12c [nouveau]
[ +0.006985] [<ffffffff02715b24>] nvkm_umem_map+0x50/0xc4 [nouveau]
[ +0.007003] [<ffffffff026af3dc>] nvkm_object_map+0x1e/0x42 [nouveau]
[ +0.006670] [<ffffffff026adf30>] nvkm_ioctl_map+0x76/0xf2 [nouveau]
[ +0.007303] [<ffffffff026ae662>] nvkm_ioctl+0xaa/0x208 [nouveau]
[ +0.006766] [<ffffffff02785d7e>] nvkm_client_ioctl+0x18/0x26 [nouveau]
[ +0.006833] [<ffffffff026a858a>] nvif_object_map_handle+0x90/0xf6 [nouveau]
[ +0.007200] [<ffffffff0278669c>] nouveau_ttm_io_mem_reserve+0x13a/0x222 [nouveau]
[ +0.007131] [<ffffffff0249d0c4>] ttm_bo_vmap+0x82/0x120 [ttm]
[ +0.000263] [<ffffffff0247d0d8>] drm_gem_ttm_vmap+0x18/0x22 [drm_ttm_helper]
[ +0.000024] [<ffffffff024e879a>] drm_gem_vmap+0x1e/0x40 [drm]
[ +0.001963] [<ffffffff024e87ec>] drm_gem_vmap_unlocked+0x30/0x50 [drm]
[ +0.000915] [<ffffffff024d4c1a>] drm_client_buffer_vmap+0x26/0x44 [drm]
[ +0.001034] [<ffffffff02415428>] drm_fbdev_generic_helper_fb_dirty+0xa2/0x190 [drm_kms_helper]
[ +0.000717] [<ffffffff024156fe>] drm_fb_helper_fb_dirty+0x86/0x174 [drm_kms_helper]
[ +0.000286] [<ffffffff02415808>] drm_fb_helper_damage_work+0x1c/0x26 [drm_kms_helper]
[ +0.000272] [<ffffffff8003a9b0>] process_one_work+0x1f6/0x390
[ +0.000024] [<ffffffff8003abd4>] worker_thread+0x8a/0x456
[ +0.000011] [<ffffffff8004381e>] kthread+0xc4/0xe4
[ +0.000012] [<ffffffff80003f4e>] ret_from_fork+0xe/0x20
[ +0.000014] ---[ end trace 0000000000000000 ]---
[ +0.133717] nouveau 0000:05:00.0: timer: stalled at ffffffffffffffff
[ +0.007740] ------------[ cut here ]------------

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: linux-image-6.5.0-17-generic 6.5.0-17.17.1.1~22.04.1
ProcVersionSignature: Ubuntu 6.5.0-17.17.1.1~22.04.1-generic 6.5.8
Uname: Linux 6.5.0-17-generic riscv64
ApportVersion: 2.20.11-0ubuntu82.5
Architecture: riscv64
CasperMD5CheckResult: unknown
CloudArchitecture: riscv64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud-net)
Date: Mon Feb 19 15:47:49 2024
SourcePackage: linux-riscv-6.5
UpgradeStatus: No upgrade log present (probably fresh install)

[Heinrich Schuchardt (xypron)]

The error occurred with a monitor that was in a low power state.

Rebooting with the monitor powered on showed no issues.

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/2054325