<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Switching from Xorg to fglrx-updates and back loses 1 monitor" href="https://bugs.freedesktop.org/show_bug.cgi?id=90246#c6">Comment # 6</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Switching from Xorg to fglrx-updates and back loses 1 monitor" href="https://bugs.freedesktop.org/show_bug.cgi?id=90246">bug 90246</a> from <a class="email" href="mailto:alexdeucher@gmail.com" title="Alex Deucher <alexdeucher@gmail.com>"> Alex Deucher</a> <pre>The open radeon driver is not loaded. You are ending up with with the vesa driver which is a generic fallback driver. [ 0.497744] vesafb: mode is 1600x1200x32, linelength=6400, pages=0 [ 0.497744] vesafb: scrolling: redraw [ 0.497746] vesafb: Truecolor: size=0:8:8:8, shift=0:16:8:0 [ 0.497761] vesafb: framebuffer at 0xd0000000, mapped to 0xffffc90004800000, using 7552k, total 7552k [ 0.497829] Console: switching to colour frame buffer device 200x75 [ 0.497850] fb0: VESA VGA frame buffer device Also, the fglrx kernel driver is still installed: [ 19.374964] fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel. [ 19.374967] Disabling lock debugging due to kernel taint [ 19.378341] fglrx: module verification failed: signature and/or required key missing - tainting kernel [ 19.387574] <6>[fglrx] Maximum main memory to use for locked dma buffers: 3747 MBytes. [ 19.387650] <6>[fglrx] vendor: 1002 device: 68f9 revision: 0 count: 1 [ 19.387815] <6>[fglrx] ioport: bar 4, base 0x3000, size: 0x100 [ 19.387980] <6>[fglrx] Kernel PAT support is enabled [ 19.387991] <6>[fglrx] module loaded - fglrx 15.20.2 [Feb 27 2015] with 1 minors Which is probably means the radeon driver is blacklisted so it's not loading. You need to fully remove the fglrx driver.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>