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evdi driver not working with USB3 to VGA Adapter on Yocto 24.0-release (kirkstone) #493

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yuchinchenTW opened this issue Oct 1, 2024 · 1 comment
Open

evdi driver not working with USB3 to VGA Adapter on Yocto 24.0-release (kirkstone) #493

yuchinchenTW opened this issue Oct 1, 2024 · 1 comment

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@yuchinchenTW
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yuchinchenTW commented Oct 1, 2024 •
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Are you using the latest driver? Yes.
Are you using the latest EVDI version? Yes.
If you are using a DisplayLink device, have you checked 'troubleshooting' on DisplayLink's website? Yes.
Is this issue related to evdi/kernel? Yes
Linux distribution and its version: Yocto 24.0-release (kirkstone)
Linux kernel version: 5.15.47
Xorg version (if used): no Im using Wayland
Desktop environment in use: Weston

have checked:

 zcat /proc/config.gz  | grep -i udl
CONFIG_DRM_UDL=y
CONFIG_FB_UDL=y

So Im using DisplayLink UVG2

Bus 001 Device 005: ID 17e9:4301 DisplayLink UVG2

try to show VGA output on the monitor

after

insmod /lib/modules/5.15.47-mtk+modified/kernel/drivers/gpu/drm/evdi/evdi.ko

and replug DisplayLink UVG2`

insmod /lib/modules/5.15.47-mtk+modified/kernel/drivers/gpu/drm/evdi/evdi.ko
root@genio-510-evk:~# dmesg | tail -n 10

[   95.230524] evdi: [I] Initialising logging on level 4
[   95.230547] evdi: [I] Atomic driver: yes
[  166.796276] usb 1-1.3: USB disconnect, device number 3
[  170.285963] usb 1-1.3: new high-speed USB device number 4 using xhci-mtk
[  170.416845] usb 1-1.3: Warning! Unlikely big volume range (=511), cval->res is probably wrong.
[  170.416868] usb 1-1.3: [13] FU [UVG2 Audio Playback Volume] ch = 2, val = -8176/0/16

it seems like nothing happened

so I tried

root@genio-510-evk:/sys/devices/evdi# echo 6 > loglevel
root@genio-510-evk:/sys/devices/evdi# echo 1 > count
-sh: count: Permission denied
root@genio-510-evk:/sys/devices/evdi# echo 1 > add
root@genio-510-evk:/sys/devices/evdi# cat count
1

root@genio-510-evk:/sys/devices/evdi# dmesg | tail -n 25
[  166.796276] usb 1-1.3: USB disconnect, device number 3
[  170.285963] usb 1-1.3: new high-speed USB device number 4 using xhci-mtk
[  170.416845] usb 1-1.3: Warning! Unlikely big volume range (=511), cval->res is probably wrong.
[  170.416868] usb 1-1.3: [13] FU [UVG2 Audio Playback Volume] ch = 2, val = -8176/0/16
[  216.899871] evdi: [I] Setting loglevel to 6
[  229.739342] evdi: [I] Increasing device count to 1
[  229.740825] evdi: [V] evdi_platform_device_probe:61
[  229.740945] evdi: [V] evdi_drm_device_init:171
[  229.740962] evdi: [V] evdi_painter_init:1225
[  229.740976] evdi: [V] evdi_modeset_init:516
[  229.741084] evdi: [V] evdi_crtc_init:476
[  229.741126] evdi: [D] evdi_crtc_init:499 drm_crtc_init: 0 p000000002a195edd
[  229.741198] evdi: [I] (card1) Opened by Task 1223 (sh) of process 1223 (sh)
[  229.741223] evdi: [V] evdi_detect:128
[  229.741235] evdi: [V] evdi_detect:134 (card1) Connector state: disconnected
[  229.741277] evdi evdi.0: [drm] Cannot find any crtc or sizes
[  229.741340] evdi: [V] evdi_painter_set_vblank:664
[  229.741353] evdi: [V] evdi_painter_set_vblank:667 Painter lock
[  229.741364] evdi: [V] evdi_painter_send_vblank:651
[  229.741374] evdi: [V] evdi_painter_set_vblank:678 Painter unlock
[  229.741385] evdi: [V] evdi_painter_send_update_ready_if_needed:686
[  229.741395] evdi: [V] evdi_painter_send_update_ready_if_needed:688 Painter lock
[  229.741405] evdi: [V] evdi_painter_send_update_ready_if_needed:698 Painter unlock
[  229.742770] [drm] Initialized evdi 1.14.7 20240920 for evdi.0 on minor 1
[  229.742818] evdi: [I] Evdi platform_device create
root@genio-510-evk:/sys/devices/evdi#

It seems like there is a new node created under drm

so I tried to turn it on

root@genio-510-evk:/sys/class/drm# ls
card0  card0-DSI-1  card0-HDMI-A-1  card1  card1-DVI-I-1  renderD128  version
root@genio-510-evk:/sys/class/drm# cd card1-DVI-I-1
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# ls
device  dpms  edid  enabled  modes  power  status  subsystem  uevent
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# cat status
disconnected
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# echo on > status
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# cat status
connected
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# dmesg | tail -n 25
[  170.416868] usb 1-1.3: [13] FU [UVG2 Audio Playback Volume] ch = 2, val = -8176/0/16
[  216.899871] evdi: [I] Setting loglevel to 6
[  229.739342] evdi: [I] Increasing device count to 1
[  229.740825] evdi: [V] evdi_platform_device_probe:61
[  229.740945] evdi: [V] evdi_drm_device_init:171
[  229.740962] evdi: [V] evdi_painter_init:1225
[  229.740976] evdi: [V] evdi_modeset_init:516
[  229.741084] evdi: [V] evdi_crtc_init:476
[  229.741126] evdi: [D] evdi_crtc_init:499 drm_crtc_init: 0 p000000002a195edd
[  229.741198] evdi: [I] (card1) Opened by Task 1223 (sh) of process 1223 (sh)
[  229.741223] evdi: [V] evdi_detect:128
[  229.741235] evdi: [V] evdi_detect:134 (card1) Connector state: disconnected
[  229.741277] evdi evdi.0: [drm] Cannot find any crtc or sizes
[  229.741340] evdi: [V] evdi_painter_set_vblank:664
[  229.741353] evdi: [V] evdi_painter_set_vblank:667 Painter lock
[  229.741364] evdi: [V] evdi_painter_send_vblank:651
[  229.741374] evdi: [V] evdi_painter_set_vblank:678 Painter unlock
[  229.741385] evdi: [V] evdi_painter_send_update_ready_if_needed:686
[  229.741395] evdi: [V] evdi_painter_send_update_ready_if_needed:688 Painter lock
[  229.741405] evdi: [V] evdi_painter_send_update_ready_if_needed:698 Painter unlock
[  229.742770] [drm] Initialized evdi 1.14.7 20240920 for evdi.0 on minor 1
[  229.742818] evdi: [I] Evdi platform_device create
[  337.134207] evdi: [V] evdi_painter_get_edid_copy:245
[  337.134243] evdi: [V] evdi_painter_get_edid_copy:247 Painter lock
[  337.134256] evdi: [V] evdi_painter_get_edid_copy:258 Painter unlock
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1#

but when i check lsmod seems like no one is using evdi

root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# lsmod
Module                  Size  Used by
evdi                   77824  0

so i tried to switch the monitor by modifying the weston.ini to DVI-I-1 which is the node just created

output]
name=DVI-I-1
mode=1920x1080

and restart weston
systemctl restart weston

now seems like evdi driver is been used howerver the monitor still does not have any display

root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# systemctl restart weston
root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# lsmod
Module                  Size  Used by
evdi                   77824  1

when I see the log it shows that it just keep spamming :

root@genio-510-evk:/sys/class/drm/card1-DVI-I-1# dmesg | tail -n 30
[  608.805918] evdi: [V] evdi_painter_send_update_ready_if_needed:688 Painter lock
[  608.805921] evdi: [V] evdi_painter_send_update_ready_if_needed:698 Painter unlock
[  608.809452] evdi: [V] evdi_painter_set_scanout_buffer:1280 Painter lock
[  608.809461] evdi: [V] evdi_painter_set_scanout_buffer:1285 Painter unlock
[  608.809466] evdi: [V] evdi_painter_mark_dirty:608 Painter lock
[  608.809469] evdi: [V] evdi_painter_mark_dirty:619 (card1) 0,0-1024,768
[  608.809474] evdi: [V] evdi_painter_mark_dirty:634 Painter unlock
[  608.809476] evdi: [V] evdi_painter_get_num_dirts:560 Painter lock
[  608.809479] evdi: [V] evdi_painter_get_num_dirts:564 Painter unlock
[  608.809482] evdi: [V] evdi_painter_set_vblank:664
[  608.809485] evdi: [V] evdi_painter_set_vblank:667 Painter lock
[  608.809488] evdi: [V] evdi_painter_send_vblank:651
[  608.809499] evdi: [V] evdi_painter_set_vblank:678 Painter unlock
[  608.809503] evdi: [V] evdi_painter_send_update_ready_if_needed:686
[  608.809506] evdi: [V] evdi_painter_send_update_ready_if_needed:688 Painter lock
[  608.809509] evdi: [V] evdi_painter_send_update_ready_if_needed:698 Painter unlock
[  608.812993] evdi: [V] evdi_painter_set_scanout_buffer:1280 Painter lock
[  608.813001] evdi: [V] evdi_painter_set_scanout_buffer:1285 Painter unlock
[  608.813006] evdi: [V] evdi_painter_mark_dirty:608 Painter lock
[  608.813009] evdi: [V] evdi_painter_mark_dirty:619 (card1) 0,0-1024,768
[  608.813014] evdi: [V] evdi_painter_mark_dirty:634 Painter unlock
[  608.813017] evdi: [V] evdi_painter_get_num_dirts:560 Painter lock
[  608.813020] evdi: [V] evdi_painter_get_num_dirts:564 Painter unlock
[  608.813023] evdi: [V] evdi_painter_set_vblank:664
[  608.813026] evdi: [V] evdi_painter_set_vblank:667 Painter lock
[  608.813029] evdi: [V] evdi_painter_send_vblank:651
[  608.813040] evdi: [V] evdi_painter_set_vblank:678 Painter unlock
[  608.813044] evdi: [V] evdi_painter_send_update_ready_if_needed:686
[  608.813046] evdi: [V] evdi_painter_send_update_ready_if_needed:688 Painter lock
[  608.813049] evdi: [V] evdi_painter_send_update_ready_if_needed:698 Painter unlock

So what did i miss
@yuchinchenTW yuchinchenTW changed the title evdi driver not working on Yocto 24.0-release (kirkstone) evdi driver not working with USB3 to VGA Adapter on Yocto 24.0-release (kirkstone) Oct 1, 2024
@synaptics-lspintzyk
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Did you installed displaylink-driver service?
It is required to drive displaylink devices, evdi kernel module is not enough.

https://www.synaptics.com/products/displaylink-graphics/downloads/ubuntu

You can use standalone installer for this.
This may be useful to you as well:
https://support.displaylink.com/knowledgebase/articles/679060-porting-the-displaylink-ubuntu-driver-to-other-lin

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