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Screen flashes black when used with Ubuntu Unity #26

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
1. Using Ubuntu 11.04 with Unity enabled
2. Move between screens
3.

What is the expected output? What do you see instead?
Moving the cursor from the remote screen back to the home screen causes the 
screen to flash black. It does not flash when moving from the home screen to 
the remote screen.

What version of the product are you using? On what operating system?
Ubuntu Linux 11.04 Beta 2 AMD64 with quicksynergy 0.9.0 for home screen.
Ubuntu Linux 10.10 AMD64 with quicksynergy 0.9.0 for remote screen.

Please provide any additional information below.
I'm using the nVidia 270.30 binary video driver.

Original issue reported on code.google.com by m...@u6.co.za on 14 Apr 2011 at 4:04

GoogleCodeExporter commented 9 years ago 
Same happens to me under similar but not exactly the same circumstances:

Ubuntu 11.4  (not the beta version)
QuickSynergy 0.9.1

nVidia graphics card

Original comment by gher...@digipen.edu on 29 Apr 2011 at 12:34

GoogleCodeExporter commented 9 years ago 
Had the same problem after upgrading to 11.04 today.

Running xset -dpms fixed it for me

Original comment by luckycar...@gmail.com on 29 Apr 2011 at 5:24

GoogleCodeExporter commented 9 years ago 
I have the exact same problem. xset -dpms didn't work for me.

Original comment by Tynen...@gmail.com on 3 May 2011 at 8:41

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
xset -dpms works for me, but the downside is it disables power management 
features on the monitor.  I didn't notice this behavior in Ubuntu 10.10, so it 
must be a bug specific to 11.04.  I'm using quicksynergy 0.9.0 as the server in 
Ubuntu 11.04, and have a Mac client running the same version of quicksynergy.  
Synergy binaries are 1.3.6 on Ubuntu, 1.4.2 on the Mac client.

Original comment by argone...@gmail.com on 19 May 2011 at 2:30

GoogleCodeExporter commented 9 years ago 
xset -dpms worked for me as well, so does dpms stand for "disable power 
management system?"

Original comment by mrjeffle...@gmail.com on 19 May 2011 at 2:33

GoogleCodeExporter commented 9 years ago 
This (xset -dpms) didn't work for me:

server: Ubuntu 10.04 (synergys 1.3.1, protocol version 1.3)
client: Ubuntu 11.04/Nvidia NVS 3100M (synergyc 1.3.6, protocol version 1.3)

I tried:
xset -dpms
xset dpms force off

Original comment by rotty3...@gmail.com on 19 May 2011 at 4:36

GoogleCodeExporter commented 9 years ago 
I just now confirmed that, for me, it has nothing to do with Unity desktop. I 
logged out and back in using the "Ubuntu Classic" desktop session and it still 
flashes when re-entering 11.04's screen.

Original comment by rotty3...@gmail.com on 19 May 2011 at 5:11

GoogleCodeExporter commented 9 years ago 
I'm having the same problem on Fedora 14 with synergyc (1.3.4), but I suspect 
the problem is not synergy but dpms.  If I run"

xset -dpms

my monitor shuts off for a second just as it does when my mouse moves into the 
Fedora monitor.  I think the reason this is happening with synergy is that 
synergy turns off dpms when the mouse re-enters the client monitor from the 
server.  If you want to check this you can issue an xset +dpms to turn on dpms, 
then xset -q to verify dpms is enable, then move the cursor back and forth 
between the synergy client and server so it flashes the screen and issue 
another xset -q to see that dpms has been disabled.

Original comment by imb...@gmail.com on 21 May 2011 at 5:46

GoogleCodeExporter commented 9 years ago 
I got rid of the flashing by turning off dpms on fedora (xset -dpms) and 
deselecting the Synchronize Screen Savers check box under Options.

Works with Synergy v1.3.1 and v1.3.4 on Windows-XP 
Synergyc v1.3.4 on Fedora

Original comment by imb...@gmail.com on 21 May 2011 at 8:45

GoogleCodeExporter commented 9 years ago 
Can you clarify which "Options" you are referring to?

Original comment by rotty3...@gmail.com on 21 May 2011 at 8:53

GoogleCodeExporter commented 9 years ago 
In the Synergy 1.3.1 UI on Windows the 3rd section is Options.  If you click on 
the Options... button it opens an Options dialog and Synchronize screen savers 
is the third check-box from the bottom.

Original comment by imb...@gmail.com on 22 May 2011 at 3:34

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
I have same problem, and it seems to work fine if I perform th "xset -dpms" 
command, but:

- if so, I lose tue power management capabilities, any alternative?
- how can I make it persistent? Every time I reboot the system the DPMS feature 
is enabled again.

thanks

Original comment by jesusm.d...@gmail.com on 17 Aug 2011 at 12:51

GoogleCodeExporter commented 9 years ago 
I'm not sure why, but no matter how I try the xset solution it never works for 
me!

Anything I can do to help debug what might be happening for me? extra info I 
should/could give?

Original comment by rotty3...@gmail.com on 26 Feb 2012 at 8:52

GoogleCodeExporter commented 9 years ago 
BTW, now both my machines are running cinnamon 1.3.1. Still the same issue.

Original comment by rotty3...@gmail.com on 26 Feb 2012 at 9:04

GoogleCodeExporter commented 9 years ago 
I also had the same problem with:
Ubuntu 10.10 with quicksynergy 0.9.1 as a server
Debian squeeze with quicksynergy 0.9.1 as client

Running "xset -dpms" on the server fixed it.

Original comment by borislav...@innovity.nl on 13 Aug 2012 at 8:03

GoogleCodeExporter commented 9 years ago 
I had this issue with the following:
Server: Ubuntu 10.10, Intel GPU
Client: Ubuntu 10.10, ATI GPU
Neither had Unity.

Turning off screen saver synchronization solved the issue. If you are using 
config file as I do, related entry is:

section: options
        screenSaverSync = false
end

This also requires DPMS to be disabled on the client (remote).

Original comment by erenguv...@gmail.com on 14 Sep 2012 at 5:30

GoogleCodeExporter commented 9 years ago 
Oh man!!! Thank you!

That's exactly what I was missing. Quicksynergy keeps removing anything it 
didn't add to it's config. Trick was adding this, but then manually calling the 
synergys command.

Finally, I added:

/usr/bin/synergys -f --config ~/.quicksynergy/synergy.conf > /dev/null 2>&1

as a start command and with setting xset -dpms on the client finally the 
flicker is gone!

Thank you again!

Original comment by rotty3...@gmail.com on 14 Sep 2012 at 5:50

GoogleCodeExporter commented 9 years ago 
I have not any like unclutter, synergy and quicksynergy.
But I have the similar problem:
https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1071482
What I am doing wrong?

Original comment by W.prox...@gmail.com on 25 Oct 2012 at 9:19

GoogleCodeExporter commented 9 years ago 
I have a synergy client on Mac and a Synergy server running on Ubuntu with 
Unity.
Ran xset -dpms on the server(Ubuntu) fixed this, although having a better fix 
than turning of power management on the screen would be better.

Original comment by karth...@google.com on 6 Dec 2012 at 1:37