"Display Properties" sets virtual resolution too low

I forgot to mention: This used to work just fine on Ubuntu 9.04

A workaround is to manually create a fresh xorg.conf using "X -configure" and to edit it to use the desired virtual size.

Yep, this is a duplicate of 433856.

same in 9.10 beta1 and asus laptop.

gnome-display settings, run in terminal, stop with message :

": org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PolicyKit.AuthenticationAgent was not provided by any .service files"

I'm getting the same as Akael. If I try to turn off mirror it asks if it can change virt res setting, and I say yes. At this point it locks up with "The name org.freedesktop.PolicyKit.AuthenticationAgent was not provided by any .service files," which appears to be a DBus error. Running as root fixes this problem ! But ! Still no visible affect after logging back in, monitors still mirrored. I'm on a Lenovo Thinkpad T60 hooking up to a fairly standard external monitor.

This bug and all of the duplicates show "Display Properties" setting the virtual resolution to 2048x2048.

In bug #425760, Jani Monoses suggested a possible solution, by changing

   if int(self.resolution[0]) < int(self.optimal_virtual_resolution[0]) or \
           int(self.resolution[1]) < int(self.optimal_virtual_resolution[1]):
            self.resolution = self.optimal_virtual_resolution

to

   if int(self.resolution[0]) < int(self.optimal_virtual_resolution[0]) and \
           int(self.resolution[1]) < int(self.optimal_virtual_resolution[1]):
            self.resolution = self.optimal_virtual_resolution

changing "or" to "and" in the file /usr/share/screen-resolution-extra/policyui.py. This also fixes this bug for me as well.

What Jani suggested is correct. I'll upload a fix soon.

This bug was fixed in the package screen-resolution-extra - 0.11

---------------
screen-resolution-extra (0.11) karmic; urgency=low

  * Set the virtual resolution to 2048x2048 only if a smaller framebuffer
    size was requested (LP: #433856).

 -- Alberto Milone <email address hidden> Wed, 14 Oct 2009 14:13:27 +0200

Thank you Alberto, works perfectly now.

For me it doesnt work yet: when i press YES after promted to have my virtual resolution adjusted, display preferences hangs and nothing happens to my screens.

os: ubuntu karmic unr
pc: 12" asus one/packard bell dot M
intel gma 500 (poulsbo driver backported from jaunty)

Hi,

Like for "foggydude" it doesn't work for me at all in 9.10.

In 9.04 I was able to change to 3 modes (mirroring displays, only laptop dispaly, only external monitor ) using display switch function key on my "IBM T60" Laptop but here I'm always in mirroring mode.

I use Benq FP222Wa external monitor with same resolution as my laptop display 1650x1080.

"gnome-display-properties" not working - after uncheck "mirroring" and "apply" it say to logout. After login again, nothing changed - still in mirroring mode.

Version of "screen-resolution-extra" is 0.11:

vukasin@vukasin-t60:~$ dpkg -l | grep screen-resolution-extra
ii screen-resolution-extra 0.11 Extension for the GNOME screen resolution ap

Like for "vukasin0", dito for me.

IBM Thinkpad R50, with ATI Mobility Radeon 7500.

Plus: when logging back in I get the following error text across the panel:

[quote]
java (error) console microsoft print 2 how to hide panel
[unquote]

What has this to do with a) Java and b) Microsoft ?

For the moment: does it make sense to fiddle around with xorg.conf & xrandr (in Karmic) ?

tp.

Sorry for not realizing immediately:

The "error" text

[quote]
java (error) console microsoft print 2 how to hide panel
[unquote]

originates from various files on my desktop. Guess this only indicates further a whacky display configuration...

tp.

Sorry for multiple posting (no way of editing ?):

New observation:

Now that I told "Display Preferences" that my external monitor is to the right side of my laptop it has worked (though physically it still is to its left). BUT - the display is still a bit whacky and fickle, that is to say, the panels (both top and below Firefox, whatever their proper name), are mostly stripy orange with the occasional icon / button visible when I hover over it.

So basically this "works", but obviously far from perfectly.

Any suggestions?

Thanks!!

tp.

Update:

Shut down the computer, cold re-boot: same orange streaky lines on panels.

Turned off visual effects completely (system > preferences > appearance): no more orange streak.

So I'm somewhat happy (though I would like to (have kept) keep some visual effects... :-/ )

tp.

Try the updated ATI drivers for effects: https://launchpad.net/~xorg-edgers/+archive/drivers-only

Or, if you can install the FGLRX drivers.

- CH

Thanks cement_head.

As I am an "absolute beginner" I would greatly appreciate a few more guiding words:

on
https://launchpad.net/~xorg-edgers/+archive/drivers-only
which links should I open? or should I use the "synaptic package manager" (or other) instead to navigate to those drivers?

Similarly, how do I find the FGLRX drivers you mention (which links to open, which buttons to press) ?

Finally, how easily can this get "messy" and irreversible ? - Do I just need to remember which drivers I installed and can then simply uninstall them if I don't see the desired effect ?

Many (beginners') thanks !

;-)

tp.

Hi Thinkpad,

  As this is not the forum, I have posted a guide here: http://ubuntuforums.org/showthread.php?t=1372224

  Please respond to the forum posting if you have any problems.

- CH