xhost or firefox - cannot use firefox with su

[lejeczek]

hi there

in f27 this: xhost +; su auser
worked okey, I could use firefox just fine, but now in f28 
firefox does not work anymore. It opens but does not load 
any content.
I wonder if you guys know why?

many thanks, L.

[fedora]

check to see if the firfox profile is accessible by auser. In FC27 the 
testing was not as strict as in FC28...

suomi

On 05/20/2018 01:14 PM, lejeczek via users wrote:
> hi there
>
> in f27 this: xhost +; su auser
> worked okey, I could use firefox just fine, but now in f28 firefox does 
> not work anymore. It opens but does not load any content.
> I wonder if you guys know why?
>
> many thanks, L.
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[Tom Horsley]

I gave up on trying to get direct access as a different
user to the display, sometimes it would work, sometimes
it wouldn't work, and I could never track down why.

I always use ssh with X forwarding now to run apps
as a different user. Something like this:

ssh -l auser -X localhost firefox &

might work.

[Tim]

Allegedly, on or about 20 May 2018, Tom Horsley sent:
> I gave up on trying to get direct access as a different
> user to the display, sometimes it would work, sometimes
> it wouldn't work, and I could never track down why.

Firefox had a habit of always trying to use the local browser window. 
I seem to recall that adding --no-remote to the command line worked
around that foible.

[Roberto Ragusa]

On 05/20/2018 01:14 PM, lejeczek via users wrote:
> hi there
>
> in f27 this: xhost +; su auser
> worked okey, I could use firefox just fine, but now in f28 firefox does not work anymore. It opens but does not load any content.
> I wonder if you guys know why?

I use a slightly different variation:

xhost si:localuser:firefoxuser
su -l firefoxuser
export DISPLAY=:0
firefox

but this is on F27, so it may also fail on F28 just like your approach.