Blurry fonts in LightweightMode on Fedora 22

[mebbe]

I have for quite some time been using the “lightweightmode” to ensure that my small and colored fonts always shows up with pixel-perfect rendering. This has worked very well until recently (seems like the problems started with the 5.1.7 release, but I’m not sure).

I often can work for quite some time with perfect rendering (picture 1), but then all of a sudden the rendering switches over and displays blurry fonts (picture 2). It is hard to tell what causes this, but for example changing the desktop background seem to always trigger this rendering ‘modeswitch’. If I logout from the desktop session and start a new virtual desktop session, all is ok again.

I’m using Fedora 22 with Xfce (running the latest release 5.1.22 on both server and client). I have a standard configuration on the server side, with only added configuration for starting Xfce virtual desktop sessions and also lightweightmode turned on in node.cfg:
AgentLightweightMode 1

Attachments:

1. 

   picture1.png
   

2. 

   picture2.png
   

[fra81]

Hi.

Please try to add the following line to the ‘/usr/NX/etc/node.cfg’ file on the server:

DisplayAgentExtraOptions “-legacydpy”

Create a new session and let us know if that makes any difference.

[mebbe]

That seems to fix the issue. Have been running all day without problems.

I will stay with the “-legacydpy” switch, but will this behavior be fixed so that I can remove the switch later? Can I expect any other negative impact from that switch?

 

[fra81]

Setting that switch has no drawback besides disabling one optimization introduced recently. This optimization (that is about using video streaming techniques in some situations) improves performance in many cases, but apparently doesn’t work as expected in your environment. We will test specifically with your environment to imrove the technique. In the meanwhile, you can use that switch safely.

[Author]

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