<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - No dual monitor with Radeon R7 240" href="https://bugs.freedesktop.org/show_bug.cgi?id=99337#c4">Comment # 4</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - No dual monitor with Radeon R7 240" href="https://bugs.freedesktop.org/show_bug.cgi?id=99337">bug 99337</a> from <a class="email" href="mailto:jerome@jolimont.fr" title="Jérôme <jerome@jolimont.fr>"> Jérôme</a> <pre>> Output name "default" means you're not using the radeon driver > but some kind of generic fallback driver. Please attach the > corresponding Xorg log file and output of dmesg. I just attached both files. I'm sorry if this is due to some misconfiguration of mine. I tried to search the web for the error messages in Xorg log to sort it out by myself, but to no avail. >From a forum thread [1], I understand that > Required kernel driver is not loaded. As a result VESA fallback > driver is used But I don't know why this kernel module is not loaded. In /etc/modprobe.d, radeonfb is blacklisted, but not radeon, and I read that blacklisting radeonfb has nothing to do with this and is the right thing to do [2]. BTW, I should mention that this computer used to have an NVidia card and used nouveau driver. After it broke, I changed for this ATI card and didn't do anything special to have it supported since xserver-xorg-video-* packages of all kinds are already installed in Debian, including the radeon one, and it all worked well, or so did I think. Please redirect me to forums/StackExchange/anywhere if I'm wasting your time. [1] <a href="http://www.linuxquestions.org/questions/linux-software-2/debian-change-resolution-4175593854/">http://www.linuxquestions.org/questions/linux-software-2/debian-change-resolution-4175593854/</a> [2] <a href="https://forums.opensuse.org/showthread.php/501875-How-to-replace-fglrx-%28AMD-Catalyst%29-with-original-driver?s=7611ada51f704a46b6448961d51c9d87&p=2674872#post2674872">https://forums.opensuse.org/showthread.php/501875-How-to-replace-fglrx-%28AMD-Catalyst%29-with-original-driver?s=7611ada51f704a46b6448961d51c9d87&p=2674872#post2674872</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>