Re: Pi 4 CPU server problems (Was Re: [9front] NVRAM access on Raspi)

[Eckard Brauer <eckard.brauer@gmx.de>]

Am Sat, 15 Aug 2020 21:17:59 +0530
schrieb "Ramakrishnan Muthukrishnan" <ram@rkrishnan.org>:

> It looks like on Pi kernels with 9front,
> plan9.ini does not seem to have any effect. I had to add
> nvram=#S/sdM0/nvram and service=cpu in the 9fat cmdline.txt file.
> auth/wrkey did work after that. (I could have just done
> nvram=/dev/sdM0/nvram as that would create the entry in /env, but
> took a while to sink in that environment variables are also files and
> I could just create one on the terminal..)
>
> However, after a reboot, I am dropped into a shell:
>
> cirno#
>
> I can't seem to start rio ("rio -i riostart" says:
>
> rio: can't open display: initdisplay: /dev/draw/new: '/dev/draw' file
> does not exist.
>
> Indeed, that file does not exist. But I can drawterm into it (via
> drawterm compiled from 9front website): drawterm -h <ip address of
> pi> -u glenda
>
> On the terminals, it shows:
>
> aux/kbdfs: warning: can't open /dev/mousein: '/dev/mousein'
> './dev/mousein' file does not exist tee: cannot open /dev/eia0:
> '/dev/eia0' mounted directory forbids creation
>
> I wonder what this is saying. The mouse seem to work and I don't know
> what the eia device is.

That's the exact point where I'm left at the moment -- just didn't take
the time to investigate it further.

Best regards,
Eckard