I’ve just rebuilt my custom zynthian from a new image downloaded yesterday. The web interface doesn’t load, or takes a long time. Are there any logs I can check to figure this out? And is there a way to restart it from command line? While waiting the Zynthian is accessible via VNC and I can navigate the Zynthian UI as normal.
Hmm, could be unrelated, but I have this when my DNS acts up for some reason, never had this on the PI 3, but my PI 5 likes giving me DNS issues.
When it can’t reach the webconfig page or takes a long time, maybe check if you can actually reach it my name by pinging the device?
ping zynthian from a terminal
If it can’t find it, it likely can’t resolve it by name.
Workaround for me is to then switch to the IP address assigned by the router for both CLI SSH access and even the Web UI.
I have not had time to dig into why this happens.
@wyleu Do you know where the physical logs for that page is stored on the zynthian OS? Maybe that can help debug if @3tree cannot access the UI but can ssh into the system?
yes that’s what I need - access to the logs on the device. I can vnc and access by terminal, it’s just the web ui doesn’t load, or is slow to do so. I typically use the ip (which is fixed) because zynthian.local wasn’t working and I hadn’t bothered to figure out why and forgotten about it. Or likely now it’s part of the same issue.
Maybe start here, the Wiki suggests a few ways to access the system without the webconfig
Command Line User Guide - ZynthianWiki
Also this topic:
Log file and level - Development - Zynthian Discourse
@3tree : This seems to be the one you are looking for journalctl -u zynthian-webconf
You can tail it if you want to see the last few lines output instead of scrolling through the whole log as well
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Here’s the log from the point where I re-opened the web ui and it took a couple of minutes or so to appear…
Feb 28 09:33:42 zynthian zynthian_webconf.sh[841]: WARNING:tornado.access:404 GET /apple-touch-icon-precomposed.png (fe80::104f:e545:bb33:88ed) 0.49ms
Feb 28 09:33:42 zynthian zynthian_webconf.sh[841]: WARNING:tornado.access:404 GET /apple-touch-icon.png (fe80::104f:e545:bb33:88ed) 0.42ms
Feb 28 09:33:42 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:200 GET /favicon.ico (fe80::104f:e545:bb33:88ed) 2.11ms
Feb 28 09:33:42 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:200 GET /img/favicon_196.png (fe80::104f:e545:bb33:88ed) 2.62ms
Feb 28 09:33:42 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:200 GET /img/favicon.ico (fe80::104f:e545:bb33:88ed) 0.56ms
Feb 28 09:33:42 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:200 GET /img/favicon_180.png (fe80::104f:e545:bb33:88ed) 1.04ms
Feb 28 09:33:44 zynthian zynthian_webconf.sh[841]: DEBUG:root:Loaded engine config with timestamp: 1740608598.994155
Feb 28 09:33:44 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:304 GET /zynterm (fe80::104f:e545:bb33:88ed) 49.45ms
Feb 28 09:33:45 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:101 GET /zynterm_ws (fe80::104f:e545:bb33:88ed) 0.52ms
Feb 28 09:33:45 zynthian zynthian_webconf.sh[841]: INFO:terminado.websocket:TermSocket.open: None
Feb 28 09:33:45 zynthian zynthian_webconf.sh[841]: INFO:terminado.websocket:TermSocket.open: Opened tty
Feb 28 09:33:47 zynthian zynthian_webconf.sh[841]: INFO:terminado.websocket:Websocket closed
Feb 28 09:33:52 zynthian zynthian_webconf.sh[841]: DEBUG:root:Loaded engine config with timestamp: 1740608598.994155
Feb 28 09:35:46 zynthian zynthian_webconf.sh[841]: DEBUG:root:Build info => Timestamp: 2024-10-02
Feb 28 09:35:46 zynthian zynthian_webconf.sh[841]: DEBUG:root:LV2 presets => 27
Feb 28 09:35:46 zynthian zynthian_webconf.sh[841]: DEBUG:root:Pianoteq presets => 0
Feb 28 09:35:46 zynthian zynthian_webconf.sh[841]: DEBUG:root:Puredata presets => 0
Feb 28 09:35:46 zynthian zynthian_webconf.sh[841]: DEBUG:root:ZynAddSubFX presets => 0
Feb 28 09:35:46 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:200 GET / (fe80::104f:e545:bb33:88ed) 114858.88ms
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: DEBUG:root:Loaded engine config with timestamp: 1740608598.994155
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:200 GET /zynterm (fe80::104f:e545:bb33:88ed) 49.86ms
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: DEBUG:root:Loaded engine config with timestamp: 1740608598.994155
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:304 GET /zynterm (fe80::104f:e545:bb33:88ed) 101.75ms
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: INFO:terminado.websocket:Websocket closed
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: INFO:tornado.access:101 GET /zynterm_ws (fe80::104f:e545:bb33:88ed) 0.51ms
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: INFO:terminado.websocket:TermSocket.open: None
Feb 28 09:35:47 zynthian zynthian_webconf.sh[841]: INFO:terminado.websocket:TermSocket.open: Opened tty
Seems like a fairly long time for this to return 200, could be the culprit (or just a symptom of an underlaying issue) if the loading on this call is supposed to return faster
anything more I can do, or explore, or are we dependent on insights from zynthian experts?!
Think we are going to have to ask for some insights from the experts.
@wyleu Anything you think we can look into?
Also, one more thing to maybe help debug it…
What are your hardware specs on your custom build?
Also, if you turn off VNC, does the problem go away? (Shot in the dark)
It’s an 8gb Raspberry Pi 5 Model B Rev 1.0. I tried turning off VNC, no change. I recall this happened a while ago but I dropped it when I didn’t get anywhere. Anyway, an odd workaround - if I disconnect the power (via the pin header) to the touch screen, it fixes it. So not a practical fix, but might point to a solution?