Color profiles support in xfce4-settings and spin.

[Sergio Cipolla]

From a discussion in the xfce forum ³ re. monitor color profiles support in xfce4-settings
I figured two things:
1. it seems to need to be built with this support ¹
2. it seems to need gnome-color-manager to show-up in the GUI ²

Re. #1, in fc30 it seems the packages wasn't built with this option and would need an
update (I didn't check the spec file but /usr/bin/xfce4-color-settings is missing).
Re. #2, I suppose the package would need to at least recommend gnome-color-manager .

¹ https://git.xfce.org/xfce/xfce4-settings/tree/configure.ac.in#n162
²
https://git.xfce.org/xfce/xfce4-settings/commit/?id=449e9d9a6f4a341d63ff5...
³ https://forum.xfce.org/viewtopic.php?id=13297

[Simon Steinbeiss]

Hi,

yes, colord support needs to be enabled at build time.

No, you don't need gnome-color-manager for that, you need something like
xiccd for monitor profiles, saned for scanners and cupsd for printers.
g-c-m is merely suggested for showing additional profile information
(gcm-viewer) and for an optional calibrate button in the UI (gcm-calibrate).

Cheers
Simon

Sergio Cipolla <lists(a)tutanota.com&gt; schrieb am Di., 27. Aug. 2019, 17:00:

>  From a discussion in the xfce forum ³ re. monitor color profiles
> support
>  in xfce4-settings I figured two things:
>  1. it seems to need to be built with this support ¹
>  2. it seems to need gnome-color-manager to show-up in the GUI ²
>
>  Re. #1, in fc30 it seems the packages wasn't built with this option and
>  would need an update (I didn't check the spec file but
>  /usr/bin/xfce4-color-settings is missing).
>  Re. #2, I suppose the package would need to at least recommend
>  gnome-color-manager .
>
>  ¹ https://git.xfce.org/xfce/xfce4-settings/tree/configure.ac.in#n162
>  ²
>
> https://git.xfce.org/xfce/xfce4-settings/commit/?id=449e9d9a6f4a341d63ff5...
>  ³ https://forum.xfce.org/viewtopic.php?id=13297
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[Mukundan Ragavan]

On 8/27/19 11:43 AM, Simon Steinbeiss wrote:
>  Hi,
>  
>  yes, colord support needs to be enabled at build time.
>  
>  No, you don't need gnome-color-manager for that, you need something like
>  xiccd for monitor profiles, saned for scanners and cupsd for printers.
>  g-c-m is merely suggested for showing additional profile information
>  (gcm-viewer) and for an optional calibrate button in the UI (gcm-calibrate).
>  
>  Cheers
>  Simon
>  
>  Sergio Cipolla <lists(a)tutanota.com <mailto:[e-mail]>> schrieb
>  am Di., 27. Aug. 2019, 17:00:
>  
>      From a discussion in the xfce forum ³ re. monitor color profiles
>      support in xfce4-settings I figured two things:
>      1. it seems to need to be built with this support ¹
>      2. it seems to need gnome-color-manager to show-up in the GUI ²
>  
>      Re. #1, in fc30 it seems the packages wasn't built with this option
>      and would need an update (I didn't check the spec file but
>      /usr/bin/xfce4-color-settings is missing).
>      Re. #2, I suppose the package would need to at least recommend
>      gnome-color-manager .
>  
>      ¹ https://git.xfce.org/xfce/xfce4-settings/tree/configure.ac.in#n162
>      ²
>     
> https://git.xfce.org/xfce/xfce4-settings/commit/?id=449e9d9a6f4a341d63ff5...
>      ³ https://forum.xfce.org/viewtopic.php?id=13297
>      _______________________________________________
>      xfce mailing list -- xfce(a)lists.fedoraproject.org
>      <mailto:[e-mail]>
>      To unsubscribe send an email to xfce-leave(a)lists.fedoraproject.org
>      <mailto:[e-mail]>
>      Fedora Code of Conduct:
>      https://docs.fedoraproject.org/en-US/project/code-of-conduct/
>      List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
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>  
>   
I have rebuilt xfce4-settings with colord support. Updates have been
submitted.

F30 - https://bodhi.fedoraproject.org/updates/FEDORA-2019-d0179eb247
F31 - https://bodhi.fedoraproject.org/updates/FEDORA-2019-70af080058

Please test and give feedback on bodhi and/or in the mailing list.

[Sergio Cipolla]

Thanks Mukundan. I installed it and there's the option in xfce4-settings-manager main
window but it can't see any device, not even the monitor (which would be the only
device as there's no printer/scanner).
https://i.postimg.cc/pL6bc3cd/Screenshot-2019-08-28-15-23-37.png

I opened this topic because of the enquiry in the forum as I change color settings
directly in the monitor as this is a desktop pc and it's at an arms length.

gnome-color-manager shows several profiles but I don't seem to find a way to enable
them from the GUI either.

There is a abrt crash for kernel-core (5.2.9-200.fc30.x86_64) when I close the color
profiles window without enough details for reporting, but when I click to see dmesg the
last line says:
[ 3398.489805] traps: xfce4-color-set[3192] general protection fault ip:7f9927be15b1
sp:7ffd99b6cef8 error:0 in libgobject-2.0.so.0.6000.6[7f9927bb6000+33000]

It happens consistently when closing the section from main xfce4-settings-manager, but not
the standalone configuration window.


On an unrelated/somewhat related issue, this kernel seems to be misbehaving somewhat with
xfce4 sessions. This a low powered old cpu and I was noticing delays at logout and once I
even logged out and went do something else and when I came back there was a kernel panic
or the like with the pc intermittently beeping from which I only came out with those
magic-sysrq keys. I'm using nvidia 340 driver. Now I make sure to let the cpu settle
before logging out. xfce is a bit problematic with this as there's a known bug of it
leaving a lot of running processes after logout.

I installed the downloaded package directly, not with dnf (which should make no
difference) and actually didn't read the docs to see if it needs some extra
configuration to be enabled.

[Simon Steinbeiss]

Not sure if you overlooked my earlier email, however you need something
like xiccd to see monitor profiles in xfce4-color-settings.

Cheers
Simon

Sergio Cipolla <lists(a)tutanota.com&gt; schrieb am Mi., 28. Aug. 2019, 20:39:

>  Thanks Mukundan. I installed it and there's the option in
>  xfce4-settings-manager main window but it can't see any device, not even
>  the monitor (which would be the only device as there's no printer/scanner).
>  https://i.postimg.cc/pL6bc3cd/Screenshot-2019-08-28-15-23-37.png
>
>  I opened this topic because of the enquiry in the forum as I change color
>  settings directly in the monitor as this is a desktop pc and it's at an
>  arms length.
>
>  gnome-color-manager shows several profiles but I don't seem to find a way
>  to enable them from the GUI either.
>
>  There is a abrt crash for kernel-core (5.2.9-200.fc30.x86_64) when I close
>  the color profiles window without enough details for reporting, but when I
>  click to see dmesg the last line says:
>  [ 3398.489805] traps: xfce4-color-set[3192] general protection fault
>  ip:7f9927be15b1 sp:7ffd99b6cef8 error:0 in
>  libgobject-2.0.so.0.6000.6[7f9927bb6000+33000]
>
>  It happens consistently when closing the section from main
>  xfce4-settings-manager, but not the standalone configuration window.
>
>
>  On an unrelated/somewhat related issue, this kernel seems to be
>  misbehaving somewhat with xfce4 sessions. This a low powered old cpu and I
>  was noticing delays at logout and once I even logged out and went do
>  something else and when I came back there was a kernel panic or the like
>  with the pc intermittently beeping from which I only came out with those
>  magic-sysrq keys. I'm using nvidia 340 driver. Now I make sure to let the
>  cpu settle before logging out. xfce is a bit problematic with this as
>  there's a known bug of it leaving a lot of running processes after logout.
>
>  I installed the downloaded package directly, not with dnf (which should
>  make no difference) and actually didn't read the docs to see if it needs
>  some extra configuration to be enabled.
>  _______________________________________________
>  xfce mailing list -- xfce(a)lists.fedoraproject.org
>  To unsubscribe send an email to xfce-leave(a)lists.fedoraproject.org
>  Fedora Code of Conduct:
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>  List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
>  List Archives:
>  https://lists.fedoraproject.org/archives/list/[e-mail]
>

[Sergio Cipolla]

Thanks Simon, I didn't overlook it, it's just that I couldn't find anything
that provided it (tried with dnf, rpm and dnfdragora GUI).

Also, maybe I'm wrong again, but then the package should look for these dependencies,
I suppose.

Sergio

[Sergio Cipolla]

A guy posted in xfce forum he's having problems with xiccd in Debian.¹
¹https://forum.xfce.org/viewtopic.php?id=13309

Maybe if it's still not much stable we could use gnome-settings-daemon? I mean in the
sense of it not interfering with the rest of Xfce session?

Regards.