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List:       freedesktop-xorg
Subject:    ZaphodHeads and Java font problem
From:       Fabian Keller <mail () fabiankeller ! de>
Date:       2017-04-20 14:55:57
Message-ID: CAJ=Ga_WJDE84euTwOyy8UO7coCjbmqSo7rvCkYkM7FOVOZOGZQ () mail ! gmail ! com
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Hi,
at my company we have a Java UI with two separate windows. From the main
window a second one is opened on a different monitor. X is configured to
have a separate display id for each monitor (zaphodhead). This
configuration worked quiet well for a couple of years on SLES11 machines
with different NVidia cards and Java versions. With the same NVidia cards
and the same Java version (but a newer X server version) it doesn't work on
a CentOS or Fedora linux. The fonts on the second window seem to be
transparent.

We tested different Java versions, Intel and NVidia drivers and Window
Manager.

I have written a little Java demo UI which reproduces the problem.
Please take a look at the following repository where i placed the code,
some screenshots and the configurations we tested.

https://github.com/f4n/ZaphodHeadsDemoUI

Do you have any ideas what we are missing in our xorg.conf? Or is the
zaphodhead
mode discontinued? Do you think it's a Java problem even if the same Java
version is working on an older X?

With xrandr/xinerama the UI works fine but we have the problem to place
different applications on the correct monitor. I know about the -geometry
option but not all applications support this (like firefox), wmctrl works
for firefox but not with xeyes (for example). Is there a common or better
way?


Kind regards,
Fabian

[Attachment #5 (text/html)]

<div dir="ltr"><div class="gmail_default" \
style="font-family:verdana,sans-serif;font-size:small">Hi,</div><div \
class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">at my \
company we have a Java UI with two separate windows. From the main window a second \
one is opened on a different monitor. X is configured to have a separate display id \
for each monitor (zaphodhead). This configuration worked quiet well for a couple of \
years on SLES11 machines with different NVidia cards and Java versions. With the same \
NVidia cards and the same Java version (but a newer X server version) it doesn&#39;t \
work on a CentOS or Fedora linux. The fonts on the second window seem to be \
transparent.</div><div class="gmail_default" \
style="font-family:verdana,sans-serif;font-size:small"><br></div><div \
class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">We \
tested different Java versions, Intel and NVidia drivers and Window Manager.  \
</div><div class="gmail_default" \
style="font-family:verdana,sans-serif;font-size:small"><br></div><div \
class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">I have \
written a little Java demo UI which reproduces the problem.</div><div \
class="gmail_default" style="font-family:verdana,sans-serif;font-size:small">Please \
take a look at the following repository where i placed the code, some screenshots and \
the configurations we tested.</div><div class="gmail_default" \
style="font-family:verdana,sans-serif;font-size:small"><br></div><div \
class="gmail_default"><font face="verdana, sans-serif"><a \
href="https://github.com/f4n/ZaphodHeadsDemoUI">https://github.com/f4n/ZaphodHeadsDemoUI</a></font><br></div><div \
class="gmail_default"><font face="verdana, sans-serif"><br></font></div><div \
class="gmail_default"><font face="verdana, sans-serif">Do you have any ideas what we \
are missing in our xorg.conf? Or is the  </font><span \
style="font-family:verdana,sans-serif">zaphodhead mode discontinued? Do you think \
it&#39;s a Java problem even if the same Java version is working on an older \
X?</span></div><div class="gmail_default"><span \
style="font-family:verdana,sans-serif"><br></span></div><div \
class="gmail_default"><span style="font-family:verdana,sans-serif">With \
xrandr/xinerama the UI works fine but we have the problem to place different \
applications on the correct monitor. I know about the -geometry option but not all \
applications support this (like firefox), wmctrl works for firefox but not with xeyes \
(for example). Is there a common or better way?</span></div><div \
class="gmail_default"><br></div><div class="gmail_default"><font face="verdana, \
sans-serif"><br></font></div><div class="gmail_default"><font face="verdana, \
sans-serif">Kind regards,</font></div><div class="gmail_default"><font face="verdana, \
sans-serif">Fabian</font></div></div>


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