Capacitative USB touch not working properly on 7' HDMI IPS (1024*600) Waveshare clone display

ReCremisi89 · March 28, 2024, 4:13pm

Dear all,

The capacitative touch function on my 7inch usb display is not working properly, as the bottom right corner does not get touch input.
Does anyone knows a fix for this?

I’m on Zynthian 2401 stable.
The display is the following one.

It should be a clone of the Waveshare 7 inch and also very similar to this other one

This is my display configuration:

Config:

hdmi_force_hotplug=1
hdmi_drive=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0dtoverlay=vc4-kms-v3d

I tested the display with a laptop and an Orange Pi Zero 3 and it works as expected.

I have the following logs

lsusb
Bus 001 Device 005: ID 1a86:e5e3 QinHeng Electronics

UI Log

– Logs begin at Wed 2024-03-27 17:47:03 GMT. –
Mar 27 17:47:25 zynthian startx[452]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Mar 27 17:47:36 zynthian startx[452]: ZynCore->setup_behaviour_zyncoder(3, …): Invalid index!
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us
Mar 27 17:47:42 zynthian startx[452]: WARNING:zynthian_autoconnect.cb_jack_xrun: Jack Audio XRUN! => delayed 0.0us

UI Debug Log

Restarting UI in debug mode
– Logs begin at Wed 2024-03-27 17:47:03 GMT. –
Mar 27 17:50:56 zynthian systemd[1]: Started Zynthian User Interface (DEBUG).
Mar 27 17:50:56 zynthian startx[1385]: X.Org X Server 1.20.4
Mar 27 17:50:56 zynthian startx[1385]: X Protocol Version 11, Revision 0
Mar 27 17:50:56 zynthian startx[1385]: Build Operating System: Linux 5.4.0-109-generic armv8l Raspbian
Mar 27 17:50:56 zynthian startx[1385]: Current Operating System: Linux zynthian 5.10.103-v7+ #1529 SMP Tue Mar 8 12:21:37 GMT 2022 armv7l
Mar 27 17:50:56 zynthian startx[1385]: Kernel command line: coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1 bcm2708_fb.fbwidth=1024 bcm2708_fb.fbheight=600 bcm2708_fb.fbswap=1 vc_mem.mem_base=0x3ec00000 vc_mem.mem_size=0x40000000 console=tty3 root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait modules-load=dwc2,libcomposite logo.nologo quiet splash vt.global_cursor_default=0
Mar 27 17:50:56 zynthian startx[1385]: Build Date: 04 April 2023 07:50:56AM
Mar 27 17:50:56 zynthian startx[1385]: xorg-server 2:1.20.4-1+rpt4+deb10u9 (Debian -- User Support)
Mar 27 17:50:56 zynthian startx[1385]: Current version of pixman: 0.36.0
Mar 27 17:50:56 zynthian startx[1385]: Before reporting problems, check http://wiki.x.org
Mar 27 17:50:56 zynthian startx[1385]: to make sure that you have the latest version.
Mar 27 17:50:56 zynthian startx[1385]: Markers: (–) probed, (**) from config file, (==) default setting,
Mar 27 17:50:56 zynthian startx[1385]: (++) from command line, (!!) notice, (II) informational,
Mar 27 17:50:56 zynthian startx[1385]: (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
Mar 27 17:50:56 zynthian startx[1385]: (==) Log file: “/var/log/Xorg.0.log”, Time: Wed Mar 27 17:50:56 2024
Mar 27 17:50:56 zynthian startx[1385]: (==) Using config directory: “/etc/X11/xorg.conf.d”
Mar 27 17:50:56 zynthian startx[1385]: (==) Using system config directory “/usr/share/X11/xorg.conf.d”
Mar 27 17:50:57 zynthian startx[1385]: /zynthian/config/img/fb_zynthian_boot.png is 1024x600 PNG image, color type GRAY, 8 bit
Mar 27 17:50:57 zynthian startx[1385]: Zooming image by 100%…done
Mar 27 17:50:57 zynthian startx[1385]: Merging…didn’t find evidence of prior run.
Mar 27 17:50:57 zynthian startx[1385]: done
Mar 27 17:50:57 zynthian startx[1385]: Building XImage…done
Mar 27 17:50:57 zynthian startx[1385]: ----------------------------------------------
Mar 27 17:50:57 zynthian startx[1385]: Linux Version: buster
Mar 27 17:50:57 zynthian startx[1385]: Kernel Version: 5.10.103-v7+
Mar 27 17:50:57 zynthian startx[1385]: ZynthianOS Version: 2401
Mar 27 17:50:57 zynthian startx[1385]: Virtualization: none
Mar 27 17:50:57 zynthian startx[1385]: Hardware Architecture: armv7l
Mar 27 17:50:57 zynthian startx[1385]: Hardware Model: Raspberry Pi 3 Model B Rev 1.2
Mar 27 17:50:57 zynthian startx[1385]: ----------------------------------------------
Mar 27 17:50:58 zynthian startx[1385]: INFO:zynthian_gui_config.: ZYNTHIAN-UI CONFIG …
Mar 27 17:50:58 zynthian startx[1385]: INFO:zynthian_gui_config.: No Wiring Layout configured. Only touch interface is available.
Mar 27 17:50:59 zynthian startx[1385]: ZynCore: Setting-up 8 x Zynswitches…
Mar 27 17:50:59 zynthian startx[1385]: ZynCore: Setting-up 4 x Zynpots (zyncoders)…
Mar 27 17:50:59 zynthian startx[1385]: ZynCore->setup_zyncoder(0, 0, 0): Can’t configure zyncoder on a single pin!
Mar 27 17:50:59 zynthian startx[1385]: ZynCore->setup_zyncoder(1, 0, 0): Can’t configure zyncoder on a single pin!
Mar 27 17:50:59 zynthian startx[1385]: ZynCore->setup_zyncoder(2, 0, 0): Can’t configure zyncoder on a single pin!
Mar 27 17:50:59 zynthian startx[1385]: ZynCore->setup_zyncoder(3, 0, 0): Can’t configure zyncoder on a single pin!
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_config.get_disabled_midi_in_ports: DISABLED_MIDI_IN = [‘’]
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_config.get_enabled_midi_out_ports: ENABLED_MIDI_OUT = [‘ttymidi:MIDI_out’, ‘QmidiNet:in_1’]
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_config.get_enabled_midi_fb_ports: ENABLED_MIDI_FB = [‘’]
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_gui_config.set_midi_config: MMC Bank Change CCNum: 0
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_gui_config.set_midi_config: MMC Bank Change UP: None
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_gui_config.set_midi_config: MMC Bank Change DOWN: None
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_gui_config.set_midi_config: MMC Program Change UP: None
Mar 27 17:51:01 zynthian startx[1385]: DEBUG:zynthian_gui_config.set_midi_config: MMC Program Change DOWN: None

Many thanks in advance for your help, and have all nice holidays!!!

ReCremisi89 · March 28, 2024, 4:22pm

Nevermind,
Seems like the solution is already here

I just replaced the standard WaveShare 7 HDMI+USB 1024x600 config in the advanced view with this one.

hdmi_force_hotplug=1
max_usb_current=1
hdmi_group=2
hdmi_mode=1
hdmi_mode=87
hdmi_cvt 1024 600 60 6 0 0 0
hdmi_drive=1

Edit:

The solution seems to be partial tough:
Touch seems to work only after unpluggin and replugging after boot.

riban · March 29, 2024, 8:41am

Have you tried putting these settings into webconf HARDWARE->Display, Config field, saving and rebooting? I don’t know if this will work but it seems like a good place to add display config instead of some random file in the OS.

oscaracena · March 29, 2024, 8:59am

Check also if the driver is not enabled (or disabled) for some reason. See here: Running Zynthian on Seeed Studio reTerminal - #26 by oscaracena

ReCremisi89 · March 29, 2024, 9:21am

Yes, that is exactly what i did to solve the bottom right corner not working. I couldn’t say whether the addition of max_usb_power or the removal of dtoverlay fixed the issue.

However then i realized the usb unplugging and replygging issues.

I will try with this in the meantime

Running Zynthian on Seeed Studio reTerminal - #26 by oscaracena

riban · March 29, 2024, 9:36am

Others have experienced this issue. I have a similar screen gathering dust somewhere. I may find time to dig it out and test… no promises were made nor may they be inferred.

ReCremisi89 · March 29, 2024, 11:38am

Some steps forward:

I used the bash script in this post and calling

bash usb_replug.sh usb1

fixes the issue.

Then i also tried to replace the following line from @oscaracena 's answer

ExecStart=/bin/bash -c ‘while ! $(xset q > /dev/null 2>&1); do sleep 2; done; sleep 5; xinput enable seeed-tp’

with

ExecStart=/bin/bash -c ‘usb_replug.sh usb1’

but it does not work.
What would be the correct way to adapt that answer to this case?

riban · March 29, 2024, 11:44am

You need the full path to your script.

ReCremisi89 · April 2, 2024, 4:02pm

I tried with the full path but doesn’t work either.

I guess I need to check if that custom systemd service is running after that zynthian has finished the booting process, right?

oscaracena · April 2, 2024, 5:12pm

You need to add the service, and enable it, so it will start on boot:

systemctl enable your-service

And you can check if it worked using status. Did you try it?

ReCremisi89 · April 10, 2024, 8:34am

I did try to add the full path and enable the systemctl service.

Status shows that it correctly runs.
I may be that I need to add and play around sleep time before actually resetting the usb hub.

I need to put this issue on hold for the moment and resume it at a later stage, but many thanks @oscaracena and @riban for the precious support so far.