Description of problem: With an Asus AT5NM10T-I motherboard (http://www.asus.com/Motherboards/Intel_CPU_on_Board/AT5NM10TI/), X thinks there is a display connected to LVDS when there isn't. This is then used as the primary display when booting the live CD, which means that the VGA display I really do have plugged in will display the background image but nothing else. Version-Release number of selected component (if applicable): Fedora 16 RC1, but the symptoms appear with 15 as well (although I have not verified the cause). How reproducible: 100% Steps to Reproduce: 1. Boot into live CD 2. ... 3. Profit! Actual results: A very lice looking background image. Expected results: A very nice looking background image, plus the gnome-shell interface. Additional info: I worked around the issue by putting this in my xorg.conf then zapping X: Section "Monitor" Identifier "LVDS1" Option "Ignore" "true" EndSection Here is what my xrandr output looks like VGA1 (really is connected, LVDS1 is not): Screen 0: minimum 320 x 200, current 2304 x 1024, maximum 4096 x 4096 LVDS1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 0mm x 0mm 1024x768 60.0*+ 800x600 60.3 56.2 640x480 59.9 VGA1 connected 1280x1024+1024+0 (normal left inverted right x axis y axis) 340mm x 270mm 1280x1024 60.0*+ 75.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 640x480 72.8 75.0 60.0 720x400 70.1 And finally, lspci: 00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge (rev 02) 00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller (rev 02) 00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller (rev 02) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02) 00:1c.3 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 4 (rev 02) 00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation N10/ICH7 Family SATA IDE Controller (rev 02) 00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02) 02:00.0 SATA controller: JMicron Technology Corp. JMB362 AHCI Controller (rev 10) 03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
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Please attach the output from running dmidecode as root.
Created attachment 532943 [details] Output of dmidecode
Works with 17 Beta.
This didn't seem to get resolved during the next release, as the issue is still present in Fedora 18 (on an Intel D510MO mother board). It seems to me to be a kernel issue, as the kernel GMA3150 driver is not detecting that there isn't a display connected to the LVDS output. A better solution seems to be to add 'video=LVDS-1:d' to the kernel command line. If this is done when booting an install USB image, it is then added permanently to the grub kernel command line.