Hi!
In commit da5e45e619b3f101420c38b3006a9ae4f3ad19b0:
> drm/nouveau/mmu: ALIGN_DOWN correct variable
>
> Commit 7110c89bb8852ff8b0f88ce05b332b3fe22bd11e ("mmu: swap out round
> for ALIGN") replaced two calls to round/rounddown with
ALIGN/ALIGN_DOWN,
> but erroneously applied ALIGN_DOWN to a different variable (addr) and left
> intended variable (tail) not rounded/ALIGNed.
>
> As a result screen corruption, X lockups are observable. An example of
kernel
> log of affected system with NV98 card where it was bisected:
>
> nouveau 0000:01:00.0: gr: TRAP_M2MF 00000002 [IN]
> nouveau 0000:01:00.0: gr: TRAP_M2MF 00320951 400007c0 00000000 04000000
> nouveau 0000:01:00.0: gr: 00200000 [] ch 1 [000fbbe000 DRM] subc 4 class
5039
> mthd 0100 data 00000000
> nouveau 0000:01:00.0: fb: trapped read at 0040000000 on channel 1
> [0fbbe000 DRM]
> engine 00 [PGRAPH] client 03 [DISPATCH] subclient 04 [M2M_IN] reason
00000006
> [NULL_DMAOBJ]
yet it is still reproducible for me on 4.16-rc7 and 4.16.0, which already
have your fix. I don't know about earlier versions -- my newer card went
into flames just a few days ago, and I replaced it a brand new 8400GS (G98)
I happened to have in a dusty closet. Obviously, I can bisect if that would
be helpful, but the error looks the same thus I'm reporting first.
Card's init:
[ 7.068779] nouveau 0000:01:00.0: NVIDIA G98 (298200a2)
[ 7.101622] cfg80211: Loading compiled-in X.509 certificates for regulatory
database
[ 7.201089] nouveau 0000:01:00.0: bios: version 62.98.29.00.00
[ 7.239105] nouveau 0000:01:00.0: bios: M0203T not found
[ 7.244530] nouveau 0000:01:00.0: bios: M0203E not matched!
[ 7.250200] nouveau 0000:01:00.0: fb: 512 MiB DDR2
[ 7.286877] [TTM] Zone kernel: Available graphics memory: 4084962 kiB
[ 7.293526] [TTM] Zone dma32: Available graphics memory: 2097152 kiB
[ 7.300170] [TTM] Initializing pool allocator
[ 7.304637] [TTM] Initializing DMA pool allocator
[ 7.309469] nouveau 0000:01:00.0: DRM: VRAM: 512 MiB
[ 7.314518] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[ 7.319933] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
[ 7.325796] nouveau 0000:01:00.0: DRM: DCB version 4.0
[ 7.331067] nouveau 0000:01:00.0: DRM: DCB outp 00: 02000300 00000028
[ 7.337596] nouveau 0000:01:00.0: DRM: DCB outp 01: 01000302 00020030
[ 7.344130] nouveau 0000:01:00.0: DRM: DCB outp 02: 02011332 00020018
[ 7.350663] nouveau 0000:01:00.0: DRM: DCB outp 03: 04022310 07a20028
[ 7.357197] nouveau 0000:01:00.0: DRM: DCB conn 00: 00001030
[ 7.362944] nouveau 0000:01:00.0: DRM: DCB conn 01: 00002161
[ 7.368695] nouveau 0000:01:00.0: DRM: DCB conn 02: 00000200
[ 7.375539] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 7.382246] [drm] Driver supports precise vblank timestamp query.
[ 7.389671] nouveau 0000:01:00.0: DRM: MM: using M2MF for buffer copies
[ 7.464023] nouveau 0000:01:00.0: DRM: allocated 1600x1200 fb: 0x70000, bo
00000000289517a1
[ 7.501927] fbcon: nouveaufb (fb0) is primary device
[ 7.615433] Console: switching to colour frame buffer device 160x64
[ 7.666358] nouveau 0000:01:00.0: fb0: nouveaufb frame buffer device
Errors:
[ 4008.457182] nouveau 0000:01:00.0: gr: TRAP_M2MF 00000002 [IN]
[ 4008.463010] nouveau 0000:01:00.0: gr: TRAP_M2MF 00320251 00f72f00 00000000
04000430
[ 4008.470774] nouveau 0000:01:00.0: gr: 00200000 [] ch 2 [001fa31000
Xorg[2678]] subc 0 class 5039 mthd 0328 data 00000000
[ 4008.481808] nouveau 0000:01:00.0: fb: trapped read at 0000f72000 on channel 2
[1fa31000 Xorg[2678]] engine 00 [PGRAPH] client 03 [DISPATCH] subclient 04
[M2M_IN] reason 00000003 [PAGE_SYSTEM_ONLY]
[12964.990240] nouveau 0000:01:00.0: fifo: DMA_PUSHER - ch 2 [Xorg[2678]] get
0000031500 put 0000034394 ib_get 00000172 ib_put 00000173 state 8000e6a0 (err:
INVALID_CMD) push 00704031
[12965.017230] nouveau 0000:01:00.0: fifo: DMA_PUSHER - ch 2 [Xorg[2678]] get
000003732c put 0000034394 ib_get 00000172 ib_put 00000199 state 80000000 (err:
INVALID_CMD) push 00406040
[12965.033547] nouveau 0000:01:00.0: fb: trapped write at 00003be000 on channel
2 [1fa31000 Xorg[2678]] engine 00 [PGRAPH] client 0b [PROP] subclient 0c [DST2D]
reason 00000002 [PAGE_NOT_PRESENT]
[12965.051014] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - 00000010
[DST2D_FAULT] - Address 00003be000
[12965.060314] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - e0c: 00000000, e18:
00000000, e1c: 00000000, e20: 00000011, e24: 0c030000
[12965.072241] nouveau 0000:01:00.0: gr: 00200000 [] ch 2 [001fa31000
Xorg[2678]] subc 2 class 502d mthd 0860 data ff020202
[12965.083283] nouveau 0000:01:00.0: fb: trapped write at 00003be200 on channel
2 [1fa31000 Xorg[2678]] engine 00 [PGRAPH] client 0b [PROP] subclient 0c [DST2D]
reason 00000002 [PAGE_NOT_PRESENT]
[12965.100766] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - 00000010
[DST2D_FAULT] - Address 0000387000
[12965.109989] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - e0c: 00000000, e18:
00000000, e1c: 00000000, e20: 00000011, e24: 0c030000
[12965.121854] nouveau 0000:01:00.0: gr: 00200000 [] ch 2 [001fa31000
Xorg[2678]] subc 2 class 502d mthd 0860 data ff020202
[13069.807377] nouveau 0000:01:00.0: Xorg[2678]: nv50cal_space: -16
[13069.956879] nouveau 0000:01:00.0: Xorg[2678]: nv50cal_space: -16
[13070.103751] nouveau 0000:01:00.0: Xorg[2678]: nv50cal_space: -16
[13070.250175] nouveau 0000:01:00.0: Xorg[2678]: nv50cal_space: -16
[13070.397110] nouveau 0000:01:00.0: Xorg[2678]: nv50cal_space: -16
[13070.543727] nouveau 0000:01:00.0: Xorg[2678]: nv50cal_space: -16
[13070.551840] nouveau 0000:01:00.0: fifo: DMA_PUSHER - ch 2 [Xorg[2678]] get
0000024bc0 put 0000024f0c ib_get 0000011f ib_put 00000122 state 40000004 (err:
INVALID_MTHD) push 00406040
[13070.569224] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 0000 data 0004e680
[13070.589325] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - 00000008
[SURF_HEIGHT_OVERRUN] - Address 0000000000
[13070.599271] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - e0c: 00000000, e18:
00000000, e1c: 00200110, e20: 00001100, e24: 00000000
[13070.611049] nouveau 0000:01:00.0: gr: 00200000 [] ch 2 [001fa31000
Xorg[2678]] subc 7 class 8297 mthd 15e0 data 00000000
[13070.621968] nouveau 0000:01:00.0: fb: trapped read at 000036b500 on channel 6
[1f551000 mplayer[23276]] engine 00 [PGRAPH] client 0a [TEXTURE] subclient 00 []
reason 00000002 [PAGE_NOT_PRESENT]
[13070.639374] nouveau 0000:01:00.0: gr: magic set 0:
[13070.644198] nouveau 0000:01:00.0: gr: 00408904: 74087b0a
[13070.649648] nouveau 0000:01:00.0: gr: 00408908: 000036b5
[13070.655117] nouveau 0000:01:00.0: gr: 0040890c: 40000430
[13070.660569] nouveau 0000:01:00.0: gr: 00408910: 36b00000
[13070.666010] nouveau 0000:01:00.0: gr: TRAP_TEXTURE - TP0: 00000003 [ FAULT]
[13070.673075] nouveau 0000:01:00.0: gr: 00200000 [] ch 6 [001f551000
mplayer[23276]] subc 3 class 8297 mthd 1b0c data 1000f010
[13191.087642] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 0190 data 001c0000
[13191.097980] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 0194 data 0004e680
[13191.109383] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 0198 data 0033004e
[13191.119791] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 019c data 0008e6a0
[13191.132146] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01a0 data 00300190
[13191.141666] nouveau 0000:01:00.0: gr: 00000010 [ILLEGAL_MTHD] ch 2
[001fa31000 Xorg[2678]] subc 0 class 5039 mthd 01a4 data 00000436
[13191.153642] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01a8 data 0004e680
[13191.165012] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01ac data 0017004e
[13191.176429] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01b0 data 0008e6a0
[13191.187792] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01b4 data 003001a2
[13191.199192] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01b8 data 00000012
[13191.210576] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01bc data 0004e680
[13191.221991] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01c0 data 00170060
[13191.233418] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01c4 data 0004f5e0
[13191.242778] nouveau 0000:01:00.0: gr: 00000010 [ILLEGAL_MTHD] ch 2
[001fa31000 Xorg[2678]] subc 0 class 5039 mthd 01c8 data 00000436
[13191.254745] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01cc data 0008ee04
[13191.266133] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01d0 data 006e0063
[13191.277519] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01d4 data 00250017
[13191.288893] nouveau 0000:01:00.0: fifo: CACHE_ERROR - ch 2 [Xorg[2678]] subc
0 mthd 01d8 data 0004f5dc
[13191.298281] nouveau 0000:01:00.0: gr: DATA_ERROR 00000004 [INVALID_VALUE]
[13191.305103] nouveau 0000:01:00.0: gr: 00100000 [] ch 2 [001fa31000
Xorg[2678]] subc 7 class 8297 mthd 1288 data 001003c4
[13191.316031] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - 00000008
[SURF_HEIGHT_OVERRUN] - Address 0000000000
[13191.325920] nouveau 0000:01:00.0: gr: TRAP_PROP - TP 0 - e0c: 00000000, e18:
00000000, e1c: 001c0000, e20: 00001100, e24: 00000000
[13191.337708] nouveau 0000:01:00.0: gr: 00200000 [] ch 2 [001fa31000
Xorg[2678]] subc 7 class 8297 mthd 15e0 data 00000000
[13965.708639] nouveau 0000:01:00.0: fb: trapped read at 2e0001e46e on channel 2
[1fa31000 Xorg[2678]] engine 0c [SEMAPHORE_BG] client 08 [PFIFO_READ] subclient
00 [] reason 00000000 [PT_NOT_PRESENT]
Artifacts are not correlated with any printk-ed errors; somehow of my two
monitors they ever happen only on the left small one (via DVI) but not on
the right big one (via HDMI, xrandred vertical). A screenshot:
https://angband.pl/tmp/g98-artifacts.png
These never happen on initial draw, slowly appear and accumulate,
disappearing once the window is redrawn, then start appearing again.
Crash (only one happened so far):
[18827.759324] nouveau 0000:01:00.0: fifo: intr 04000000
[18829.968650] ------------[ cut here ]------------
[18830.073628] WARNING: CPU: 1 PID: 0 at
drivers/gpu/drm/nouveau/nvkm/subdev/mc/base.c:72 nvkm_mc_intr+0x144/0x160
[nouveau]
[18830.078080] nouveau 0000:01:00.0: timeout
[18830.089198] Modules linked in: arc4 mt7601u mac80211 sha256_generic cfg80211
rfkill nouveau video ttm
[18830.093352] WARNING: CPU: 3 PID: 7568 at
drivers/gpu/drm/nouveau/nvkm/subdev/bar/g84.c:38 g84_bar_flush+0xb4/0xc0
[nouveau]
[18830.102599] CPU: 1 PID: 0 Comm: swapper/1 Not tainted
4.16.0-rc7-debug-00033-g48f6f9f11263 #1
[18830.113768] Modules linked in:
[18830.122386] Hardware name: System manufacturer System Product Name/M4A77T,
BIOS 2401 05/18/2011
[18830.122448] RIP: 0010:nvkm_mc_intr+0x144/0x160 [nouveau]
[18830.125457] arc4
[18830.134575] RSP: 0018:ffff88022fc43da0 EFLAGS: 00010046
[18830.139921] mt7601u mac80211
[18830.141889] RAX: 00000000ffffffff RBX: ffff880212651780 RCX: ffff88022fc592e0
[18830.141893] RDX: ffffc90002088068 RSI: ffff88022fc43df7 RDI: ffffc90002000100
[18830.147139] sha256_generic cfg80211
[18830.150150] RBP: ffff880224c62400 R08: 0000000000000000 R09: 0000000000000000
[18830.150153] R10: 0000000000000000 R11: 0000000000000000 R12: 00000000ffffffff
[18830.157305] rfkill nouveau
[18830.164605] R13: 000000000000001a R14: ffff8802223bfc00 R15: 0000000000000000
[18830.164610] FS: 0000000000000000(0000) GS:ffff88022fc40000(0000)
knlGS:0000000000000000
[18830.168190] video ttm
[18830.175422] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[18830.175426] CR2: 00007f68e65e8030 CR3: 000000021dbc9000 CR4: 00000000000006e0
[18830.182590] CPU: 3 PID: 7568 Comm: <omitted> Not tainted
4.16.0-rc7-debug-00033-g48f6f9f11263 #1
[18830.185467] Call Trace:
[18830.192613] Hardware name: System manufacturer System Product Name/M4A77T,
BIOS 2401 05/18/2011
[18830.192633] RIP: 0010:g84_bar_flush+0xb4/0xc0 [nouveau]
[18830.200808] <IRQ>
[18830.203170] RSP: 0018:ffffc900017fb7f0 EFLAGS: 00010086
[18830.208959] ? wq_worker_waking_up+0x8/0x30
[18830.216083] RAX: 000000000000001d RBX: ffff880225cda400 RCX: 0000000000000006
[18830.216086] RDX: 0000000000000007 RSI: 0000000000000000 RDI: ffff88022fcd5270
[18830.225253] nvkm_pci_intr+0x4e/0x80 [nouveau]
[18830.227661] RBP: ffff880224c62400 R08: 0000000000000000 R09: 0000000000013100
[18830.227665] R10: 0000000000000001 R11: 0000000000000000 R12: ffff8802223bfb00
[18830.236777] __handle_irq_event_percpu+0x32/0xe0
[18830.242005] R13: 0000112066bcb3a0 R14: ffff8802223c2c48 R15: 0000000000000246
[18830.242009] FS: 00007f6910fea280(0000) GS:ffff88022fcc0000(0000)
knlGS:0000000000000000
[18830.244064] handle_irq_event_percpu+0x23/0x60
[18830.249284] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[18830.249288] CR2: 000055e159e90bec CR3: 00000001e0617000 CR4: 00000000000006e0
[18830.253544] handle_irq_event+0x25/0x50
[18830.260680] Call Trace:
[18830.260706] nv50_instobj_release+0x30/0xc0 [nouveau]
[18830.267914] ? apic_ack_edge+0x31/0x50
[18830.272387] nvkm_vmm_iter.constprop.14+0x549/0x7e0 [nouveau]
[18830.279615] handle_edge_irq+0x6e/0x190
[18830.286792] ? nvkm_vmm_map_choose+0xb0/0xb0 [nouveau]
[18830.291480] handle_irq+0x17/0x30
[18830.298670] ? nvkm_vmm_map_valid+0x50/0x200 [nouveau]
[18830.298693] nvkm_vmm_map+0x20f/0x3f0 [nouveau]
[18830.306900] do_IRQ+0x50/0xf0
[18830.311368] ? nv50_vmm_part+0x60/0x60 [nouveau]
[18830.317205] common_interrupt+0xf/0xf
[18830.324361] nvkm_mem_map_dma+0x43/0x50 [nouveau]
[18830.328262] RIP: 0010:__do_softirq+0x66/0x1f2
[18830.330740] nvkm_uvmm_mthd+0x769/0x8b0 [nouveau]
[18830.335843] RSP: 0018:ffff88022fc43f80 EFLAGS: 00000206 ORIG_RAX:
ffffffffffffffdd
[18830.339620] nvkm_ioctl+0x12d/0x270 [nouveau]
[18830.345425] RAX: 000000000001f080 RBX: ffff88022fc54f00 RCX: 00000000ffffffff
[18830.345429] RDX: 0000000000000000 RSI: 0000000000200042 RDI: 0000000000000380
[18830.349278] nvif_object_mthd+0x123/0x150 [nouveau]
[18830.354492] RBP: 0000000000000000 R08: 0000000000000080 R09: ffffc9000373bd20
[18830.354495] R10: 0000000000000002 R11: 000000000000000f R12: 0000000000000000
[18830.357823] ? _cond_resched+0x10/0x40
[18830.362985] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002
[18830.362991] ? common_interrupt+0xa/0xf
[18830.367541] nvif_vmm_map+0x90/0xd0 [nouveau]
[18830.370549] ? hrtimer_interrupt+0x112/0x240
[18830.375189] nouveau_mem_map+0x77/0xd0 [nouveau]
[18830.378884] irq_exit+0xaa/0xb0
[18830.383618] nouveau_vma_new+0x1b5/0x1d0 [nouveau]
[18830.388001] smp_apic_timer_interrupt+0x64/0xa0
[18830.392746] nouveau_gem_object_open+0x109/0x130 [nouveau]
[18830.400421] apic_timer_interrupt+0xf/0x20
[18830.404788] drm_gem_handle_create_tail+0xd3/0x160
[18830.411969] </IRQ>
[18830.419146] ? nouveau_gem_new+0x120/0x120 [nouveau]
[18830.424088] RIP: 0010:do_idle+0x15a/0x1c0
[18830.431277] nouveau_gem_ioctl_new+0x83/0xd0 [nouveau]
[18830.431282] drm_ioctl_kernel+0x6b/0xd0
[18830.438630] RSP: 0018:ffffc90000ccbf20 EFLAGS: 00000282 ORIG_RAX:
ffffffffffffff12
[18830.442389] drm_ioctl+0x301/0x3a0
[18830.449643] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffff88022fc60400
[18830.449648] RDX: 00000000000c0000 RSI: 0000000000000003 RDI: ffff88022fc54f00
[18830.453508] ? nouveau_gem_new+0x120/0x120 [nouveau]
[18830.457946] RBP: ffffffff8228c8d8 R08: 0000000000080000 R09: ffff88022fca0400
[18830.457950] R10: 0000000000000000 R11: 000000000001a574 R12: 0000000000000000
[18830.462262] nouveau_drm_ioctl+0x8d/0xd0 [nouveau]
[18830.466906] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[18830.466914] cpu_startup_entry+0x1b/0x20
[18830.470074] do_vfs_ioctl+0xa0/0x610
[18830.474926] secondary_startup_64+0xa5/0xb0
[18830.479477] ? _copy_to_user+0x22/0x30
[18830.485091] Code:
[18830.489216] ? SyS_prlimit64+0x164/0x230
[18830.489221] SyS_ioctl+0x91/0xa0
[18830.494095] f9
[18830.496203] do_syscall_64+0x61/0x110
[18830.501201] 48
[18830.505225] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[18830.510457] c7
[18830.514298] RIP: 0033:0x7f690d044f07
[18830.522008] c6
[18830.525406] RSP: 002b:00007ffd4d6fe078 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[18830.532694] 53
[18830.539845] RAX: ffffffffffffffda RBX: 0000000001c97500 RCX: 00007f690d044f07
[18830.539848] RDX: 00007ffd4d6fe0d0 RSI: 00000000c0306480 RDI: 0000000000000009
[18830.544907] 69
[18830.552045] RBP: 00007ffd4d6fe0d0 R08: 0000000000000004 R09: 00007f690d30c410
[18830.552048] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000c0306480
[18830.559259] 1c
[18830.564076] R13: 0000000000000009 R14: 0000000001c97438 R15: 0000000001c2ef10
[18830.564079] Code:
[18830.571339] a0
[18830.575285] 41
[18830.578906] 48
[18830.583090] 5f e9
[18830.586895] 8b 14
[18830.588913] 70 29
[18830.592896] c5
[18830.596134] 87 e1
[18830.597912] 00
[18830.601584] 48 8b
[18830.603364] f0
[18830.608431] 7d 10
[18830.610219] 1c
[18830.613823] 48 8b
[18830.615609] a0 49
[18830.623191] 5f 50
[18830.624959] 8b 46
[18830.632134] 48 85
[18830.639356] 10
[18830.641104] db 74
[18830.648360] 48
[18830.655501] 1b e8
[18830.657306] 8b
[18830.664496] 7e 32
[18830.666560] 78
[18830.668319] 5b e1
[18830.670105] 10
[18830.671871] 48 89
[18830.673937] e8
[18830.675954] da 48
[18830.678009] ca
[18830.679767] 89 c6
[18830.681824] 22
[18830.683589] 48 c7
[18830.685626] 57
[18830.687393] c7 11
[18830.689466] e1
[18830.691241] 52 1c
[18830.693280] 0f
[18830.695298] a0 e8
[18830.697326] b6 54
[18830.699344] 7c 13
[18830.701419] 24
[18830.703177] 03 e1
[18830.705213] 07 <line noise>
Meow!
--
⢀⣴⠾⠻⢶⣦⠀
⣾⠁⢰⠒⠀⣿⡁
⢿⡄⠘⠷⠚⠋⠀ ... what's the frequency of that 5V DC?
⠈⠳⣄⠀⠀⠀⠀