Hi! I bought a used laptop 13 to put into a printed CJ64 computer case.
It’s an intel ultra 7 155h with 16GB ram and 500gb ssd running openSuse.
It works flawlessly inside its laptop case but when I put the mainboard, the wifi card and the audio board into the CJ64 I get a weird issue.
The whole thing seems technically to be booting, I can go into the bios, the boot menu and even get to openSuses boot menu, but right afterwards the screen goes black.
External screens then show “no display signal”, I connected the laptop screen to the mainboard to test it and that just turns off at that point (but shows everything else the same as the external monitors).
I tried a bazzite stick and that shows the boot text but as soon as the display manager should start… no picture.
I am not quite sure if the mainboard turns off too, as there is no change in led lights. The leds on the side with the power connector (left for me) keeps glowing white and green.
Has anyone any idea what could be done to get it working?
I put everything back into the laptop case to see if I maybe damaged it, but there it again runs fine, boots, let’s me log into openSuse, everything works.
Gotta check you’ve set standalone mode in the UEFI/BIOS? Is it standalone mode being weird? That’s to say that the internal eDP connector might still show video and openSuSE uses that in preference to your display-connector cards.
I did set it its on enabled and the laptop screen, when connected to the mainboard while it is in the CJ64 casing shows the same black screen, that is the internal eDP isn’t it?
Basically HDMI externally and the internal screen go black after the openSuse boot menu or when using, for instance, the bazzite stick. The bazzite stick shows a menu where you can select install or different options, that is visible. When I click install some text for booting bazzite shows up (can’t remember what it says now) then the screen goes black.
Almost as if it decides to boot the display manager but before that happens it turns of the screen (or the output signal).
Standalone mode is enabled and detect standalone is also enabled. Also power on ac attach is enabled but I learned that that only works with the battery connected.
Mainboard, sound board and wifi are connected (and for testing the internal scren) , the hdmi expansion card works, so does the usb-a and usb-c expansions (keyboard and sticks are detected). Bios shows, boot menu shows, openSuse bootloader shows and any and all boot sticks of linux distros I tried get at least to the selection menu for install or live system. But nothing shows after that point.
Hmm, I have an update.
Now I swear I tried this before and it did not work but it does now.
When you start the computer and get to the linux boot screen it turns off the first time, when you push the power button again right after it boots. So to boot it I always have to turn it on twice now.
I guess this might be normal behaviour? (but why?)
Does the standalone mode require booting twice each time?
Thanks!