webOS <4.0 doesn't run startup.sh, hence no SSH or Telnet

[kopiro]

I had a working version of Homebrew until I decided to upgrade to 05.50 system software, now webOS 4.4.2 (from 05.40).

The initial symptoms after upgrading are that SSH server is not working, Telnet is not working and also PicCap doesn't auto-start - but I still have elevated privileges.

After some debugging, it looks like that the autostart service registered by Homebrew is not being called; hence no startup.sh called.

I built a companion app that tries to call the autostart service via LunaBus; once installed, you can see that the first call to the autostart services fails because of a LunaBus error - but trying again it works.

Our assumption is that probably the service doesn't get registered in time or there are some overloads of the LunaBus at startup.

The error we get from LunaBus is this: https://github.com/webosose/luna-service2/blob/master/src/libluna-service2/transport.c#L239

---

Most likely, this new method of using previewMetadata in the appinfo.json doesn't work on webOS 4+, and the startup method was working in the previous firmware because of the presence of /etc/wam/plugins/conf.sh that called our script in the $EXTRA_CONF path:

EXTRA_CONF=/mnt/lg/cmn_data/wam/extra_conf.sh

if test -f $EXTRA_CONF; then
    source $EXTRA_CONF;
fi

That has now been removed from the 4.4 firmware.

[kopiro]

In my case, I've a running Homebrew + startup with the companion app I built myself and managed to manually run the startup.sh script and everything works correctly, but U guess we ned to find a new way to run services at startup.

[mariotaku]

Hi, I think the previewMetadata was working on webOS 4 and above. Did it stop working recently?

[kopiro]

It doesn't work for me on webOs 4.4 - and most likely not working before?

[mariotaku]

I was using webOS 4.9 and 5.3 and it worked. Could you install Netflix and see if there are suggestions when you focus the icon?

[kopiro]

Nope, no suggestions.

Also, the Netflix ipk I inspected installed on the TV doesn't have any previewMetadata attribute.

I did a grep search and none of the package appinfo.json have it.

This is a TV from 2018, LG B8 running latest software with webos 4.4

[kopiro]

It may be possible that with webOS4.4 we are stick in a limbo where none of the previous startup method works (extra_conf.sh or start_devmode.sh) as they patched this but the firmware is too old to support new features like the previewMetadata.

Also, what I've noticed after some usage is that Homebrew stops working and all INSTALL options are greyed-out.

After some digging I found out that's because the LunaBus stop being responsive, causing no luna-message to be dispatched (by looking at ls-monitor).

[mariotaku]

That's really unfortunate. I think in such case only crashd method is available (if they are still working).

[kopiro]

Isn't crashd method only to gain root?

[mariotaku]

IIRC if the file is there it will always work.

[fryc88]

I'm on same boat with kopiro, with SK8500PLA, MY2018 tv, with webos 4.4 as well.
Looks like i have same issues with doing root, with help of hellobox on discord i've managed to get kopiros ipk working on my tv because even that didn't work for me at the beggining, it was just showing some weird output, but hellobox suggested to do some magic, and after that i've got it. However now, after starting up tv, few minutes later homebrew ipk stop working, root status becomes pending and i can't launch/install new apps. After power cycle it does work for few minutes and then back on that again.

[C0DEbrained]

Similar boat to @kopiro and @fryc88 here. Managed to crashd my way to root, but autostart isn't working for me. I tried installing https://github.com/kopiro/webosbrew-autostart, but that encounters errors when running the autostart service as luna-send -n 1 'luna://org.webosbrew.hbchannel.service/autostart' '{}' gives the error {"returnValue":false,"errorText":"undefined is not a function"}.

Unlike @kopiro though, I do seem to get suggestions when hovering over home icons like Netflix as suggested earlier ( #124 (comment))

[HagiaHaya]

If you can't access the telnet via homebrew app, add this repo https://repo.webosapp.club -> install root.telnet and connect normally.