[mythtv-users] Fwd: Re: Fwd: Re: Mythfrontend freezing and VDPAU?

[Allen Edwards]

On Wed, Mar 4, 2020 at 6:34 PM Stephen Worthington <stephen_agent at jsw.gen.nz>
wrote:

> On Wed, 4 Mar 2020 10:23:57 -0800, you wrote:
>
> >>
> >> I just put those 2 (with some extra checking) eg:
> >>>
> >>
> >> #!/bin/bash
> >> while true ; do
> >>     systemctl isolate multi-user.target
> >>     if [ $? -eq 0 ]; then
> >>         systemctl isolate graphical.target
> >>         exit 0
> >>     fi
> >>     sleep 1
> >> done
> >>
> >> (something along those lines - untested)
> >> Put in a script and call the script from irexec
> >>
> >>
> >>
> >>> Allen
> >>>
> >>> _______________________________________________
> >>
> >>
> >I tested the script suggested and found two problems.
> >1) I need to call my script with sudo. I don't know how to do that but if
> >it works on the next myth lockup I assume I can figure it out or ask for
> >help.
> >2) I had to change one line so the script is now
> >#!/bin/bash
> >         while [  true  ]; do
> >                systemctl isolate multi-user.target
> >                if [ $? -eq 0 ]; then
> >                     systemctl isolate graphical.target
> >                     exit 0
> >                fi
> >                sleep 1
> >         done
> >
> >I obviously cannot test it from the local terminal but it works fine from
> >my desktop upstairs. My plan is to try this the next time that myth hangs
> >up so I can confirm that it works under the actual locked conditions. My
> >fear is that it is the video card itself that is hung and that this will
> >not clear it.
> >
> >Putting it in a button should be easy but not sure about the permissions
> >part.
> >
> >Allen
>
> Any script or program can be set up in the /etc/sudoers file (or
> better in /etc/sudoers.d) to be able to be run with sudo without
> asking for a password.  If you still want proper security, you need to
> make sure that anyone who can run the script is unable to modify it,
> so write permission should be set to root only.  I do this for my
> mythtv-systemctl-helper.sh file that is run from mythfrontend to shut
> down or restart the system.
>
> See this post for full details:
>
> https://lists.gt.net/mythtv/users/625993
> _______________________________________________
>

Thank you for this.  I have modified my killgui.sh file to add sudo









*#!/bin/bash         while [  true  ]; do                sudo systemctl
isolate multi-user.target                if [ $? -eq 0 ]; then
       sudo systemctl isolate graphical.target                     exit 0
              fi                sleep 1         done*

I created a test file that will only run with root permissions and put it
in /etc/sudoers.d/ and changed the permissions and it runs.
*chown root:mythtv*
*chmod ug=rx,o=*

My plan is to wait until I have a real lockup and run the file manually.
When that test is successful, I will modify* /home/dad/.mythtv/lircrc* like
this

*config = /etc/sudoers.d/killgui.sh &*

Hopefully I have this all correct.  Please let me know if I screwed
anything up :-)

Allen
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