Re: Garbled sysinst TUI after successful system probe

[kat%electronic-quill.net@localhost]

Success!
That was exactly the clue I needed; thankyou.

In case anyone else is reading this because they have the same problem:`boot -c` got me a boot menu, but it wasn't accepting input from my USB keyboard, so I couldn't use the full set of commands from there.

What did work was:
- At the boot menu, select option 2.
- Enter `userconf disable nouveau`.- Enter `menu` to return to the original boot menu.
- Press 1 to boot into the installer.
- After running the installer and rebooting, you need to repeat the first 4 steps at the boot menu, to disable Nouveau and boot the system.
- Edit `boot.cfg` (the documentation says it's `boot.conf`) and add the line `userconf=disable nouveau`
- Probably reboot at that point, to verify that it works.

My apologies for top-posting, but this web interface doesn't have an obvious way to properly edit this message as plain text.


Thanks again,
Kat

Oct 18, 2026, 00:19 by rvp%SDF.ORG@localhost:

> On Sat, 17 Oct 2026, kat%electronic-quill.net@localhost wrote:
>
>> The initial installer menu loads fine, and pressing "1" gives the usual stream of system-probe messages, so that much works perfectly well. When sysinst tries to present its TUI, things go immediately to pot.
>> A couple of green and magenta horizontal lines appear over the text near the top of the screen, and the bottom quarter initially flashes with some green-on-black garbage, which is quickly replaced by slowly evolving white-on-blue garbage. I take this to be a disagreement between the GPU and the driver selected by the installer.
>>
>
> Most likely a DRMKMS driver issue. Try disabling `nouveau'[1]. At the bootloader
> prompt:
>
>> userconf disable nouveau*
>> menu
>>
>
> -RVP
>
> [1]: https://wiki.netbsd.org/tutorials/x11/how_to_use_wsfb_uefi_bios_framebuffer/
>