06-30-2023, 08:26 AM
(06-30-2023, 12:10 AM)eudoxos Wrote: I have exactly the same issue (blank screen, error in drm_mode_object_add):/ the UART log is at https://pastebin.com/4rv7gbYE .
Quote:Following the directions from the wiki page to connect to the UART adapter, I run into trouble as I don't see a /dev/ttyUSB0 on my system.
I first plugged the cable into the other USB port, it has to be in the one labeled DEBUG. Perhaps run "dmesg -w" and you should see something like this after you plug it in (it does not have to be in the PineTab, as it takes power from your computer):
Code:[94825.741027] usb 1-2.4.1: new full-speed USB device number 19 using xhci_hcd
[94825.850246] usb 1-2.4.1: New USB device found, idVendor=1a86, idProduct=7523, bcdDevice=81.33
[94825.850257] usb 1-2.4.1: New USB device strings: Mfr=0, Product=2, SerialNumber=0
[94825.850261] usb 1-2.4.1: Product: USB Serial
[94825.902691] ch341 1-2.4.1:1.0: ch341-uart converter detected
[94825.909575] usb 1-2.4.1: ch341-uart converter now attached to ttyUSB0
Thanks!
Watching dmesg -w on my desktop when I plug in the adapter, I see messages like that, but then immediately afterwards it gets detached from ttyUSB0.
Only once out of the ~5 times I tried plugging it in did it remain attached to ttyUSB0. Odd. But it seems to work better with other devices.
---
And yeah, I also found warnings in dmesg around drm_mode_object_add.
Code:
[ 0.826751] ------------[ cut here ]------------
[ 0.826773] WARNING: CPU: 2 PID: 50 at drivers/gpu/drm/drm_mode_object.c:45 drm_mode_object_add+0x90/0x98
[ 0.826811] Modules linked in:
[ 0.826829] CPU: 2 PID: 50 Comm: kworker/u8:1 Not tainted 6.3.0-2-danctnix #1
[ 0.826842] Hardware name: Pine64 PineTab2 v2.0 (DT)
[ 0.826853] Workqueue: events_unbound deferred_probe_work_func
[ 0.826876] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 0.826889] pc : drm_mode_object_add+0x90/0x98
[ 0.826904] lr : drm_property_create+0xd0/0x188
[ 0.826917] sp : ffff8000098735b0
[ 0.826925] x29: ffff8000098735b0 x28: ffff0001f17b3480 x27: 0000000000000037
[ 0.826948] x26: 0000000000001000 x25: 0000000000001000 x24: ffff0001f1705800
[ 0.826970] x23: ffff800008f160c0 x22: 0000000000000004 x21: 00000000b0b0b0b0
[ 0.826991] x20: ffff0001f21db590 x19: ffff0001f1705800 x18: ffff80000985d110
[ 0.827012] x17: 286e201ed0517200 x16: 1d01010101010101 x15: ffff800009873550
[ 0.827033] x14: ffff0001f21db170 x13: ffff0001f21db154 x12: 00000000000001ef
[ 0.827054] x11: 000000000000020d x10: 0000000000000078 x9 : 0000000000000000
[ 0.827074] x8 : ffff0001f21db580 x7 : 0000000000000000 x6 : 000000000000003f
[ 0.827095] x5 : 0000000000000040 x4 : ffff8000098735c0 x3 : 0000000000000000
[ 0.827115] x2 : 00000000b0b0b0b0 x1 : ffff0001f21db590 x0 : 0000000000000001
[ 0.827136] Call trace:
[ 0.827143] drm_mode_object_add+0x90/0x98
[ 0.827159] drm_property_create+0xd0/0x188
[ 0.827172] drm_property_create_enum+0x30/0x94
[ 0.827184] drm_connector_set_panel_orientation+0x94/0xb4
[ 0.827200] boe_get_modes+0x70/0xbc
[ 0.827214] drm_panel_get_modes+0x28/0x48
[ 0.827229] panel_bridge_connector_get_modes+0x1c/0x2c
[ 0.827246] drm_helper_probe_single_connector_modes+0x1a4/0x52c
[ 0.827258] drm_client_modeset_probe+0x204/0x1194
[ 0.827271] __drm_fb_helper_initial_config_and_unlock+0x54/0x494
[ 0.827285] drm_fb_helper_initial_config+0x4c/0x60
[ 0.827298] drm_fbdev_client_hotplug+0x8c/0xd8
[ 0.827310] drm_fbdev_generic_setup+0x90/0x170
[ 0.827324] rockchip_drm_bind+0x1ec/0x208
[ 0.827341] try_to_bring_up_aggregate_device+0x170/0x1c0
[ 0.827359] __component_add+0xa8/0x174
[ 0.827373] component_add+0x18/0x28
[ 0.827389] dw_mipi_dsi_rockchip_host_attach+0x5c/0x14c
[ 0.827403] dw_mipi_dsi_host_attach+0x98/0xcc
[ 0.827415] mipi_dsi_attach+0x2c/0x44
[ 0.827429] boe_dsi_probe+0xf8/0x1a0
[ 0.827443] mipi_dsi_drv_probe+0x24/0x34
[ 0.827457] really_probe+0x150/0x2b4
[ 0.827471] __driver_probe_device+0x7c/0xe8
[ 0.827485] driver_probe_device+0x40/0x164
[ 0.827498] __device_attach_driver+0xc4/0x144
[ 0.827513] bus_for_each_drv+0x88/0xe8
[ 0.827526] __device_attach+0xa0/0x190
[ 0.827539] device_initial_probe+0x18/0x28
[ 0.827554] bus_probe_device+0xb0/0xb4
[ 0.827568] deferred_probe_work_func+0x88/0xc4
[ 0.827583] process_one_work+0x1dc/0x340
[ 0.827600] worker_thread+0x224/0x434
[ 0.827614] kthread+0x10c/0x110
[ 0.827626] ret_from_fork+0x10/0x20
[ 0.827644] ---[ end trace 0000000000000000 ]---
[ 0.827699] ------------[ cut here ]------------
[ 0.827707] WARNING: CPU: 2 PID: 50 at drivers/gpu/drm/drm_mode_object.c:242 drm_object_attach_property+0x6c/0xb8
[ 0.827733] Modules linked in:
[ 0.827746] CPU: 2 PID: 50 Comm: kworker/u8:1 Tainted: G W 6.3.0-2-danctnix #1
[ 0.827759] Hardware name: Pine64 PineTab2 v2.0 (DT)
[ 0.827768] Workqueue: events_unbound deferred_probe_work_func
[ 0.827787] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[ 0.827800] pc : drm_object_attach_property+0x6c/0xb8
[ 0.827814] lr : drm_connector_set_panel_orientation+0x68/0xb4
[ 0.827828] sp : ffff800009873650
[ 0.827835] x29: ffff800009873650 x28: ffff0001f17b3480 x27: 0000000000000037
[ 0.827858] x26: 0000000000001000 x25: 0000000000001000 x24: ffff0001f1705800
[ 0.827880] x23: 00000000fffffffd x22: ffff0001f0234380 x21: ffff0001f1705800
[ 0.827902] x20: ffff0001f1705238 x19: ffff0001f1705170 x18: ffff80000985d0f8
[ 0.827923] x17: 286e201ed0517200 x16: 1d01010101010101 x15: ffff800009873550
[ 0.827944] x14: ffff0001f21db170 x13: ffff0001f21db154 x12: 00000000000001ef
[ 0.827964] x11: 000000000000020d x10: 0000000000000078 x9 : 0000000000000000
[ 0.827985] x8 : ffff0001f21db638 x7 : 00000000c0c0c0c0 x6 : 00000000c0c0c0c0
[ 0.828006] x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000006
[ 0.828025] x2 : 0000000000000003 x1 : ffff0001f21db580 x0 : ffff0001f17051b0
[ 0.828046] Call trace:
[ 0.828052] drm_object_attach_property+0x6c/0xb8
[ 0.828067] boe_get_modes+0x70/0xbc
[ 0.828081] drm_panel_get_modes+0x28/0x48
[ 0.828097] panel_bridge_connector_get_modes+0x1c/0x2c
[ 0.828111] drm_helper_probe_single_connector_modes+0x1a4/0x52c
[ 0.828123] drm_client_modeset_probe+0x204/0x1194
[ 0.828138] __drm_fb_helper_initial_config_and_unlock+0x54/0x494
[ 0.828153] drm_fb_helper_initial_config+0x4c/0x60
[ 0.828166] drm_fbdev_client_hotplug+0x8c/0xd8
[ 0.828178] drm_fbdev_generic_setup+0x90/0x170
[ 0.828189] rockchip_drm_bind+0x1ec/0x208
[ 0.828205] try_to_bring_up_aggregate_device+0x170/0x1c0
[ 0.828224] __component_add+0xa8/0x174
[ 0.828238] component_add+0x18/0x28
[ 0.828252] dw_mipi_dsi_rockchip_host_attach+0x5c/0x14c
[ 0.828266] dw_mipi_dsi_host_attach+0x98/0xcc
[ 0.828279] mipi_dsi_attach+0x2c/0x44
[ 0.828293] boe_dsi_probe+0xf8/0x1a0
[ 0.828305] mipi_dsi_drv_probe+0x24/0x34
[ 0.828318] really_probe+0x150/0x2b4
[ 0.828332] __driver_probe_device+0x7c/0xe8
[ 0.828345] driver_probe_device+0x40/0x164
[ 0.828358] __device_attach_driver+0xc4/0x144
[ 0.828371] bus_for_each_drv+0x88/0xe8
[ 0.828384] __device_attach+0xa0/0x190
[ 0.828397] device_initial_probe+0x18/0x28
[ 0.828412] bus_probe_device+0xb0/0xb4
[ 0.828425] deferred_probe_work_func+0x88/0xc4
[ 0.828439] process_one_work+0x1dc/0x340
[ 0.828454] worker_thread+0x224/0x434
[ 0.828468] kthread+0x10c/0x110
[ 0.828479] ret_from_fork+0x10/0x20
[ 0.828494] ---[ end trace 0000000000000000 ]---
