<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Same output (DisplayPort) is used in multi-head configuration for different Devices/Displays" href="https://bugs.freedesktop.org/show_bug.cgi?id=99103#c5">Comment # 5</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Same output (DisplayPort) is used in multi-head configuration for different Devices/Displays" href="https://bugs.freedesktop.org/show_bug.cgi?id=99103">bug 99103</a> from <a class="email" href="mailto:Stefan.LAUTERWASSER@thalesgroup.com" title="Stefan.LAUTERWASSER@thalesgroup.com">Stefan.LAUTERWASSER@thalesgroup.com</a> <pre>(In reply to Michel Dänzer from <a href="show_bug.cgi?id=99103#c4">comment #4</a>) > In short, this configuration (Zaphod style, with 4 screens per GPU) isn't > supported. The radeon driver only supports 2 screens per GPU in Zaphod mode. Sorry, I saw the restriction of 6 monitors per GPU and didn't saw any restriction of 2 screens per GPU - I may overlooked. Is the limit simulated or by design? I have an idea of the differences supporting one or two, but didn't understand the differences in supporting two or six screens - the idea of fragmentation exists already. You don't need to explain in details, but if you are able to refer to some background information - I am just a bit stupid and nosy. > Unless you really need multiple X11 protocol screens and/or static > configuration in xorg.conf, I'd suggest trying without xorg.conf and letting > the desktop environment manage the display configuration via RandR 1.4. Note > that in this case I highly recommend using at least the xf86-video-ati 7.8.0 > release, possibly even current Git master, and ideally a newer version of > Xorg as well. We use only X server with openbox - not that rich desktop environment. I tried to configure with xrandr command but I have no idea how to create displays without xorg.conf and I don't know how to bind a output to a display. I am able to create displays and output binding with xorg.conf only, can you show me a different way/command? But if the driver doesn't support more than 2 screens how can xrandr help? > Alternatively, you could try combining two displays per Zaphod screen, but > I'm not sure that'll work out. Our safety concept currently does not allow more than one monitor per screen and display - we change that in future if we have to, but currently cannot.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>