New Pidp-11 github-Installation works only with sudo-permission

[stephan küppers]

I installed a new pidp-11 from github.

With a start with "pdp11control start 2024" i found that starting sim gives an error-message: "xu not attched"!

If i start with "sudo pdp11control start 2024" i found starting sim with "xu attached to eth0"!

What is wrong with my installation? Have i allways to work with sudo-permission?

MfG

Stephan

[terri-...@glaver.org]

Which GitHub repository did you use (there are quite a few forks). The "obsolescence" one

is the official one, and the "Terri-Kennedy" one is my development fork which will eventual-

ly become the official one. But there are many others.

Oscar's (obsolescence) installation script does some things in the wrong order. I *think* I

fixed all of those in my GitHub. But my efforts have been concentrated on getting the com-

pletely re-designed installer (which should fix all of this stuff) going. 

I believe the command you need to have it work as a regular user is:

sudo setcap cap_net_raw,cap_net_admin=eip /opt/pidp11/src/02.3_simh/4.x+realcons/bin-rpi/pdp11_realcons

[stephan küppers]

Hello!

I got this error-message:

Failed to set capabilities on file 'setcap': No such file or directory

MfG 

Stephan

[stephan küppers]

By the way: I use the os trixie (64bit) and the github installation from obsolescence

Stephan

terri-...@glaver.org schrieb am Montag, 29. Dezember 2025 um 21:35:42 UTC+1:

[terri-...@glaver.org]

On Tuesday, December 30, 2025 at 10:54:34 AM UTC-5 stephank...@gmail.com wrote:

I got this error-message:

Failed to set capabilities on file 'setcap': No such file or directory

That's odd. I just tried it on my PiDP-11 and got:

terri@spcpi2-host:~ $ sudo setcap cap_net_raw,cap_net_admin=eip /opt/pidp11/src/02.3_simh/4.x+realcons/bin-rpi/pdp11_realcons
terri@spcpi2-host:~ $ 

Please try the following two commands:

which setcap

find /opt -name pdp11_realcons

On my system, I get:

terri@spcpi2-host:~ $ which setcap
/usr/sbin/setcap
terri@spcpi2-host:~ $ find /opt -name pdp11_realcons
/opt/pidp11/bin/backupAmd64-binaries/pdp11_realcons
/opt/pidp11/bin/backup32bit-binaries/pdp11_realcons
/opt/pidp11/bin/backup64bit-binaries/pdp11_realcons
/opt/pidp11/src/02.3_simh/4.x+realcons/bin-rpi/pdp11_realcons
terri@spcpi2-host:~ $ 
 

By the way: I use the os trixie (64bit) and the github installation from obsolescence

Trixie support is mostly (pretty much entirely, actually) untested. Current development

is happening under Bookworm and once that is solid, I'll see what extra work is needed

for Trixie. Some people over in the PiDP-10 group reported problems with Trixie, and at

least one PiDP-11 user here had to give up and start over with Bookworm (which fixed

their issues). The Raspberry Pi organization just released Trixie in October, and I notice

that they re-rolled the kits at the beginning of this month, so it seems to still be working

on becoming stable for production use,

Oscar's obsolescence GitHub repo has an install script that does some things (including

this 'setcap') in the wrong order. Re-running it may (or may not) correct the issue, but

using the setcap command I provided should get you going. If you typed it in by hand,

it is long and has some oddball characters, so I recommend using cut/paste to issue the

command.  Remember that reading this group on the web (or possibly via email) may

wrap the command line. The whole thing from 'sudo' through 'realcons' is all one com-

mand line.