On Mon, 2015-02-02 at 23:09 +0100, Patrick Ohly wrote:
> On Fri, 2015-01-30 at 15:47 +0100, Olivier Delbeke wrote:
> > Thanks a lot for your support.
> >
> > FYI, I finally got a picture ! All I needed to do was to use the magic
> > "security=none". But of course, it's not very satisfying ; it should
> > work without that. Please let me know if it works better with the new
> > kernel patches.
>
> Unfortunately it doesn't.
>
> Kevin, Ronan: Olivier is using the current "tizen" branch of
> tizen-distro, which is essentially rev_0.9. Do you have any idea why
> this worked when you tried it?
>
> > About the wayland-egl error message ("libEGL warning: wayland-egl:
> > could not open /dev/dri/card0 (Permission denied)"), I think I
> > understood what happens :
> > - libwayland-egl is used by all wayland clients
> > - libwayland-egl need to open /dev/dri/card0
> > - the wayland clients are run as user 'app'
> > - /dev/dri/card0 is owned by group 'video'
> > - user 'app' is not a member of group 'video' => denied access
> > As a test, I tried to add the user "app" to group "video" (with
> > "usermod -a -G video app"), but got a "PAM authentication failure". I
> > don't know how to overcome this without recompiling the file system.
>
> You can just edit /etc/groups directly. The fix in the recipes is in
> config-tizen-ivi.bb: adding the "app" user must include the "video"
> group.
>
> Same question here: how can this have worked when rev_0.9 was released?
>
> I've fixed the group permissions locally; unfortunately now weston
> segfaults in gl-renderer.so, with and without "security=none".
Found it.
When I removed the genivi user from the input group also in my Yocto
build, weston failed because it could no longer open these devices.
That's because weston-launch is not suid root in my Yocto builds. Ronan,
Kevin, do you remember how you achieved that in the rev_0.9 build?
The Tizen .spec file has
%attr(4755,root,root) %{_bindir}/weston-launch
I'm not seeing anything related to that in the weston.inc or
weston-extraconf.inc.
Anyway, having "app" and "genivi" in the "input" and "video" group fixes
these issues.
There were also additional workarounds in weston-ivi-shell-extraconf.inc
but I am not sure whether they are still relevant.
--
Best Regards, Patrick Ohly
The content of this message is my personal opinion only and although
I am an employee of Intel, the statements I make here in no way
represent Intel's position on the issue, nor am I authorized to speak
on behalf of Intel on this matter.
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