Lamar Owen wrote: > On 11/04/2015 04:48 PM, m.roth at 5-cent.us wrote: >> Yep. They got nothing for CentOS 7. Btw, we got him the full width by >> changing the cable, from DVI-I to DVI-D (dual link). Then he had to >> change it back to not recognizing the full width of the screen via the >> control ctr, because when it did, everything was distorted - circles >> were ovals, etc. I suppose I'll get around to writing him a xorg.conf >> at some time. > > Mark, with the FirePro V3900 the 'radeon' driver should be loading, not > the VESA one. Is xorg-x11-drv-ati installed? I am running a FirePro Yup: rpm -qa | grep drv-ati xorg-x11-drv-ati-7.4.0-1.20140918git56c7fb8.el7.x86_64 Note that, as I said earlier, it is over a year old. > M7820 in my Dell Precision M6500, and everything 'Just Works' with the > xorg-x11-drv-ati package (and its dependencies) installed. I even get > triple monitor support at 1920x1200 while docked, using the dual > DisplayPort outputs on the dock, on two 24" Dell monitors plus the > M6500's 17" display. For using a projector, the DisplayPort connector > on the laptop works fine, even hotplug works. I have been very pleased This is, according to what I google, a 27", and it's black for what could well be 1.5" on either side... which makes it 24".... <snip> > For my FirePro M7820, here's the lspci output: > 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. > [AMD/ATI] Broadway XT [Mobility Radeon HD 5870] > 01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Juniper > HDMI Audio [Radeon HD 5700 Series] > 02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Turks GL [FirePro V3900] 02:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Turks/Whistler HDMI Audio [Radeon HD 6000 Series] > Are you sure you're actually using the VESA drivers? The Turks chip > used in the V3900 shows as being supported ('man radeon' will give you a > list of supported chips). > > Check /var/log/Xorg.0.log and see what's going on. Did. I am *not* going to paste in almost 3,000 lines (what a *useful* logfile... NOT!), but the relevant lines, I believe, are [ 18.760] (EE) open /dev/fb0: No such file or directory [ 18.760] (WW) Falling back to old probe method for fbdev [ 18.760] (II) Loading sub module "fbdevhw" [ 18.760] (II) LoadModule: "fbdevhw" [ 18.760] (II) Loading /usr/lib64/xorg/modules/libfbdevhw.so [ 18.760] (II) Module fbdevhw: vendor="X.Org Foundation" [ 18.760] compiled for 1.15.0, module version = 0.0.2 [ 18.760] ABI class: X.Org Video Driver, version 15.0 [ 18.760] (EE) open /dev/fb0: No such file or directory [ 18.760] (EE) Screen 0 deleted because of no matching config section. [ 18.760] (II) UnloadModule: "radeon" [ 18.760] (EE) Screen 0 deleted because of no matching config section. [ 18.760] (II) UnloadModule: "modesetting" [ 18.760] (EE) Screen 0 deleted because of no matching config section. [ 18.760] (II) UnloadModule: "fbdev" [ 18.760] (II) UnloadSubModule: "fbdevhw" [ 18.760] (II) Loading sub module "vbe" [ 18.760] (II) LoadModule: "vbe" [ 18.760] (II) Loading /usr/lib64/xorg/modules/libvbe.so [ 18.803] (II) Module vbe: vendor="X.Org Foundation" [ 18.803] compiled for 1.15.0, module version = 1.1.0 [ 18.803] ABI class: X.Org Video Driver, version 15.0 [ 18.803] (II) Loading sub module "int10" [ 18.803] (II) LoadModule: "int10" [ 18.803] (II) Loading /usr/lib64/xorg/modules/libint10.so [ 18.805] (II) Module int10: vendor="X.Org Foundation" [ 18.805] compiled for 1.15.0, module version = 1.0.0 [ 18.805] ABI class: X.Org Video Driver, version 15.0 [ 18.805] (II) VESA(0): initializing int10 [ 18.806] (II) VESA(0): Primary V_BIOS segment is: 0xc000 [ 18.806] (II) VESA(0): VESA BIOS detected Followed by many, many lines that begin with VESA. That's why I said that at some point I was going to hand-craft an xorg.conf. Do you know if there's a way to dump the current settings to a file? I know I can do it with NVidia, but this is just KDE's settings. > > Wolfy is working on the latest Catalyst drivers for ELrepo for EL7 > (fglrx 15.9 as I recall). There are some challenges, and the kmod-fglrx > package is still in testing. But as well as the open radeon driver is > supporting my M7820 I'm not sure I want to change at this point. There > would have to be some compelling reason. Thanks for the info - I'm looking forward to that. mark