Hello, 

"Brian Conway" <[email protected]> wrote:
> On Thu, Oct 23, 2025, at 9:21 AM, [email protected] wrote:
> > Dear list,
> >
> >
> > after upgrading to OpenBSD 7.8 I seem to be unable
> > to launch x11vnc on it, the last lines it spits are
> >
> > 23/10/2025 16:15:05 shmget(scanline) failed.
> > 23/10/2025 16:15:05 shmget: No space left on device
> >
> > and I do not understand what they mean (ie., on what
> > device there is no space?).
> >
> > Please, has anybody seen the same? What could be
> > the reason / solution?  
> 
> I run x11vnc and have not noticed any issues moving from 7.7 to 7.8, but in 
> this case it may be because I am using the '-noshm' flag. For reference, I 
> use the following as my full set of flags, mostly taken from the pkg README 
> with a couple others added over time:
> 
> x11vnc_flags=-localhost -logfile /var/log/x11vnc -ncache 0 -forever -loop100 
> -auth guess -rfbauth /etc/x11vncpasswd -nevershared -display :0 -noshm
> 

the -noshm option made my connection work again. Thanks! So there must be
something about going from OpenBSD 7.7 to 7.8 that breaks the MIT-shm polling
(whatever that is). 

Thanks.
Ruda

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