After posting fine and showing me the grub menu, my monitor shows "No signal". I've done the "nomodeset" trick, and that's how I'm typing this post out, but I don't want this to become a permanent 'solution'. I've tried downgrading to 14.04.5 (the only 14.04 ISO I could find on ubuntu.com for some reason), and ended up with the same problem. I decided I'd dual boot 14.04.5 and 16.04.1 just so I can switch back and forth if I need to (they're using the same partition for the home folder).
When on 14.04 I couldn't install the fglrx drivers because of unmet dependencies (like this one here). I switched back to 16.04, and tried the radeon and amdgpu drivers, with no luck.
One weird thing, is that if I plug my HDMI television into the MOBO, along with the VGA cable, they both work fine (on 16.04, haven't been able to test this on 14.04). I noticed this problem last week when I gave up my HDMI monitor.
I'm using an AMD A8-7600, with no discrete GPU. Here's my entire parts list for the sake of brevity.
Here's my cat /var/log/Xorg.0.log
[ 12.844]
X.Org X Server 1.18.3
Release Date: 2016-04-04
[ 12.844] X Protocol Version 11, Revision 0
[ 12.844] Build Operating System: Linux 3.13.0-92-generic x86_64 Ubuntu
[ 12.844] Current Operating System: Linux phoenix 4.4.0-31-generic #50-Ubuntu SMP Wed Jul 13 00:07:12 UTC 2016 x86_64
[ 12.845] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=20d1a670-d7b6-4897-8027-0ec9c633b0ab ro nomodeset vga=792
[ 12.845] Build Date: 22 July 2016 07:50:34AM
[ 12.845] xorg-server 2:1.18.3-1ubuntu2.3 (For technical support please see http://www.ubuntu.com/support)
[ 12.845] Current version of pixman: 0.33.6
[ 12.845] Before reporting problems, check http://wiki.x.org
to make sure that you have the latest version.
[ 12.845] Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[ 12.845] (==) Log file: "/var/log/Xorg.0.log", Time: Mon Sep 12 13:02:15 2016
[ 12.907] (==) Using config directory: "/etc/X11/xorg.conf.d"
[ 12.907] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
[ 12.930] (==) No Layout section. Using the first Screen section.
[ 12.930] (==) No screen section available. Using defaults.
[ 12.930] (**) |-->Screen "Default Screen Section" (0)
[ 12.930] (**) | |-->Monitor "<default monitor>"
[ 12.931] (==) No monitor specified for screen "Default Screen Section".
Using a default monitor configuration.
[ 12.931] (==) Automatically adding devices
[ 12.931] (==) Automatically enabling devices
[ 12.931] (==) Automatically adding GPU devices
[ 12.931] (==) Max clients allowed: 256, resource mask: 0x1fffff
[ 12.931] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not exist.
[ 12.931] Entry deleted from font path.
[ 12.931] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
[ 12.931] Entry deleted from font path.
[ 12.931] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
[ 12.932] Entry deleted from font path.
[ 12.932] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
[ 12.932] Entry deleted from font path.
[ 12.932] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
[ 12.932] Entry deleted from font path.
[ 12.932] (==) FontPath set to:
/usr/share/fonts/X11/misc,
/usr/share/fonts/X11/Type1,
built-ins
[ 12.932] (==) ModulePath set to "/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
[ 12.932] (II) The server relies on udev to provide the list of input devices.
If no devices become available, reconfigure udev or disable AutoAddDevices.
[ 12.932] (II) Loader magic: 0x562635159da0
[ 12.932] (II) Module ABI versions:
[ 12.932] X.Org ANSI C Emulation: 0.4
[ 12.932] X.Org Video Driver: 20.0
[ 12.932] X.Org XInput driver : 22.1
[ 12.932] X.Org Server Extension : 9.0
[ 12.932] (++) using VT number 7
[ 12.932] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
[ 12.933] (--) PCI:*(0:0:1:0) 1002:1313:1458:d000 rev 0, Mem @ 0xc0000000/268435456, 0xd0000000/8388608, 0xfeb00000/262144, I/O @ 0x0000f000/256, BIOS @ 0x????????/131072
[ 12.934] (II) LoadModule: "glx"
[ 12.939] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
[ 13.070] (II) Module glx: vendor="X.Org Foundation"
[ 13.070] compiled for 1.18.3, module version = 1.0.0
[ 13.070] ABI class: X.Org Server Extension, version 9.0
[ 13.070] (==) AIGLX enabled
[ 13.070] (==) Matched ati as autoconfigured driver 0
[ 13.070] (==) Matched modesetting as autoconfigured driver 1
[ 13.070] (==) Matched fbdev as autoconfigured driver 2
[ 13.070] (==) Matched vesa as autoconfigured driver 3
[ 13.070] (==) Assigned the driver to the xf86ConfigLayout
[ 13.070] (II) LoadModule: "ati"
[ 13.070] (WW) Warning, couldn't open module ati
[ 13.070] (II) UnloadModule: "ati"
[ 13.070] (II) Unloading ati
[ 13.070] (EE) Failed to load module "ati" (module does not exist, 0)
[ 13.070] (II) LoadModule: "modesetting"
[ 13.070] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 13.070] (II) Module modesetting: vendor="X.Org Foundation"
[ 13.070] compiled for 1.18.3, module version = 1.18.3
[ 13.070] Module class: X.Org Video Driver
[ 13.070] ABI class: X.Org Video Driver, version 20.0
[ 13.071] (II) LoadModule: "fbdev"
[ 13.071] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 13.071] (II) Module fbdev: vendor="X.Org Foundation"
[ 13.071] compiled for 1.18.1, module version = 0.4.4
[ 13.071] Module class: X.Org Video Driver
[ 13.071] ABI class: X.Org Video Driver, version 20.0
[ 13.071] (II) LoadModule: "vesa"
[ 13.071] (WW) Warning, couldn't open module vesa
[ 13.071] (II) UnloadModule: "vesa"
[ 13.071] (II) Unloading vesa
[ 13.071] (EE) Failed to load module "vesa" (module does not exist, 0)
[ 13.071] (==) Matched ati as autoconfigured driver 0
[ 13.071] (==) Matched modesetting as autoconfigured driver 1
[ 13.071] (==) Matched fbdev as autoconfigured driver 2
[ 13.071] (==) Matched vesa as autoconfigured driver 3
[ 13.071] (==) Assigned the driver to the xf86ConfigLayout
[ 13.071] (II) LoadModule: "ati"
[ 13.071] (WW) Warning, couldn't open module ati
[ 13.071] (II) UnloadModule: "ati"
[ 13.071] (II) Unloading ati
[ 13.071] (EE) Failed to load module "ati" (module does not exist, 0)
[ 13.071] (II) LoadModule: "modesetting"
[ 13.071] (II) Loading /usr/lib/xorg/modules/drivers/modesetting_drv.so
[ 13.071] (II) Module modesetting: vendor="X.Org Foundation"
[ 13.071] compiled for 1.18.3, module version = 1.18.3
[ 13.071] Module class: X.Org Video Driver
[ 13.071] ABI class: X.Org Video Driver, version 20.0
[ 13.071] (II) UnloadModule: "modesetting"
[ 13.071] (II) Unloading modesetting
[ 13.071] (II) Failed to load module "modesetting" (already loaded, 0)
[ 13.071] (II) LoadModule: "fbdev"
[ 13.071] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
[ 13.071] (II) Module fbdev: vendor="X.Org Foundation"
[ 13.071] compiled for 1.18.1, module version = 0.4.4
[ 13.071] Module class: X.Org Video Driver
[ 13.071] ABI class: X.Org Video Driver, version 20.0
[ 13.071] (II) UnloadModule: "fbdev"
[ 13.071] (II) Unloading fbdev
[ 13.071] (II) Failed to load module "fbdev" (already loaded, 0)
[ 13.071] (II) LoadModule: "vesa"
[ 13.071] (WW) Warning, couldn't open module vesa
[ 13.071] (II) UnloadModule: "vesa"
[ 13.071] (II) Unloading vesa
[ 13.071] (EE) Failed to load module "vesa" (module does not exist, 0)
[ 13.071] (II) modesetting: Driver for Modesetting Kernel Drivers: kms
[ 13.071] (II) FBDEV: driver for framebuffer: fbdev
[ 13.079] (EE) open /dev/dri/card0: No such file or directory
[ 13.079] (EE) open /dev/dri/card0: No such file or directory
[ 13.079] (WW) Falling back to old probe method for modesetting
[ 13.079] (EE) open /dev/dri/card0: No such file or directory
[ 13.079] (EE) open /dev/dri/card0: No such file or directory
[ 13.079] (II) Loading sub module "fbdevhw"
[ 13.079] (II) LoadModule: "fbdevhw"
[ 13.079] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[ 13.080] (II) Module fbdevhw: vendor="X.Org Foundation"
[ 13.080] compiled for 1.18.3, module version = 0.0.2
[ 13.080] ABI class: X.Org Video Driver, version 20.0
[ 13.080] (**) FBDEV(2): claimed PCI slot 0@0:1:0
[ 13.080] (II) FBDEV(2): using default device
[ 13.080] (EE) Screen 0 deleted because of no matching config section.
[ 13.080] (II) UnloadModule: "modesetting"
[ 13.080] (EE) Screen 0 deleted because of no matching config section.
[ 13.080] (II) UnloadModule: "modesetting"
[ 13.080] (II) FBDEV(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 13.080] (==) FBDEV(0): Depth 24, (==) framebuffer bpp 32
[ 13.080] (==) FBDEV(0): RGB weight 888
[ 13.080] (==) FBDEV(0): Default visual is TrueColor
[ 13.080] (==) FBDEV(0): Using gamma correction (1.0, 1.0, 1.0)
[ 13.080] (II) FBDEV(0): hardware: VESA VGA (video memory: 3072kB)
[ 13.080] (II) FBDEV(0): checking modes against framebuffer device...
[ 13.080] (II) FBDEV(0): checking modes against monitor...
[ 13.080] (--) FBDEV(0): Virtual size is 1024x768 (pitch 1024)
[ 13.080] (**) FBDEV(0): Built-in mode "current": 78.7 MHz, 59.9 kHz, 75.7 Hz
[ 13.080] (II) FBDEV(0): Modeline "current"x0.0 78.65 1024 1056 1184 1312 768 772 776 792 -hsync -vsync -csync (59.9 kHz b)
[ 13.080] (==) FBDEV(0): DPI set to (96, 96)
[ 13.080] (II) Loading sub module "fb"
[ 13.080] (II) LoadModule: "fb"
[ 13.080] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 13.086] (II) Module fb: vendor="X.Org Foundation"
[ 13.086] compiled for 1.18.3, module version = 1.0.0
[ 13.086] ABI class: X.Org ANSI C Emulation, version 0.4
[ 13.086] (**) FBDEV(0): using shadow framebuffer
[ 13.086] (II) Loading sub module "shadow"
[ 13.086] (II) LoadModule: "shadow"
[ 13.087] (II) Loading /usr/lib/xorg/modules/libshadow.so
[ 13.087] (II) Module shadow: vendor="X.Org Foundation"
[ 13.087] compiled for 1.18.3, module version = 1.1.0
[ 13.087] ABI class: X.Org ANSI C Emulation, version 0.4
[ 13.087] (==) Depth 24 pixmap format is 32 bpp
[ 13.087] (II) FBDEV(0): FBIOBLANK: Invalid argument (Screen blanking not supported by kernel - disabling)
[ 13.108] (==) FBDEV(0): Backing store enabled
[ 13.116] (==) FBDEV(0): DPMS enabled
[ 13.116] (==) RandR enabled
[ 13.120] (II) SELinux: Disabled on system
[ 13.121] (II) AIGLX: Screen 0 is not DRI2 capable
[ 13.121] (EE) AIGLX: reverting to software rendering
[ 13.515] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[ 13.516] (II) AIGLX: Loaded and initialized swrast
[ 13.516] (II) GLX: Initialized DRISWRAST GL provider for screen 0
[ 13.612] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[ 13.612] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 13.612] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 13.612] (II) LoadModule: "evdev"
[ 13.612] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[ 13.628] (II) Module evdev: vendor="X.Org Foundation"
[ 13.628] compiled for 1.18.1, module version = 2.10.1
[ 13.628] Module class: X.Org XInput Driver
[ 13.628] ABI class: X.Org XInput driver, version 22.1
[ 13.628] (II) Using input driver 'evdev' for 'Power Button'
[ 13.628] (**) Power Button: always reports core events
[ 13.628] (**) evdev: Power Button: Device: "/dev/input/event1"
[ 13.628] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 13.628] (--) evdev: Power Button: Found keys
[ 13.628] (II) evdev: Power Button: Configuring as keyboard
[ 13.628] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input1/event1"
[ 13.628] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 6)
[ 13.628] (**) Option "xkb_rules" "evdev"
[ 13.628] (**) Option "xkb_model" "pc105"
[ 13.628] (**) Option "xkb_layout" "us"
[ 13.629] (II) config/udev: Adding input device Video Bus (/dev/input/event2)
[ 13.629] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 13.629] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
[ 13.629] (II) Using input driver 'evdev' for 'Video Bus'
[ 13.629] (**) Video Bus: always reports core events
[ 13.629] (**) evdev: Video Bus: Device: "/dev/input/event2"
[ 13.629] (--) evdev: Video Bus: Vendor 0 Product 0x6
[ 13.629] (--) evdev: Video Bus: Found keys
[ 13.629] (II) evdev: Video Bus: Configuring as keyboard
[ 13.629] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A03:00/LNXVIDEO:00/input/input4/event2"
[ 13.629] (II) XINPUT: Adding extended input device "Video Bus" (type: KEYBOARD, id 7)
[ 13.629] (**) Option "xkb_rules" "evdev"
[ 13.629] (**) Option "xkb_model" "pc105"
[ 13.629] (**) Option "xkb_layout" "us"
[ 13.629] (II) config/udev: Adding input device Power Button (/dev/input/event0)
[ 13.629] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 13.629] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[ 13.629] (II) Using input driver 'evdev' for 'Power Button'
[ 13.629] (**) Power Button: always reports core events
[ 13.629] (**) evdev: Power Button: Device: "/dev/input/event0"
[ 13.629] (--) evdev: Power Button: Vendor 0 Product 0x1
[ 13.629] (--) evdev: Power Button: Found keys
[ 13.629] (II) evdev: Power Button: Configuring as keyboard
[ 13.629] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0/event0"
[ 13.629] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD, id 8)
[ 13.629] (**) Option "xkb_rules" "evdev"
[ 13.630] (**) Option "xkb_model" "pc105"
[ 13.630] (**) Option "xkb_layout" "us"
[ 13.630] (II) config/udev: Adding input device HDA ATI HDMI HDMI/DP,pcm=3 (/dev/input/event6)
[ 13.630] (II) No input driver specified, ignoring this device.
[ 13.630] (II) This device may have been added with another device file.
[ 13.630] (II) config/udev: Adding input device Logitech USB Optical Mouse (/dev/input/event4)
[ 13.630] (**) Logitech USB Optical Mouse: Applying InputClass "evdev pointer catchall"
[ 13.630] (**) Logitech USB Optical Mouse: Applying InputClass "evdev pointer catchall"
[ 13.630] (II) Using input driver 'evdev' for 'Logitech USB Optical Mouse'
[ 13.630] (**) Logitech USB Optical Mouse: always reports core events
[ 13.630] (**) evdev: Logitech USB Optical Mouse: Device: "/dev/input/event4"
[ 13.630] (--) evdev: Logitech USB Optical Mouse: Vendor 0x46d Product 0xc05a
[ 13.630] (--) evdev: Logitech USB Optical Mouse: Found 3 mouse buttons
[ 13.630] (--) evdev: Logitech USB Optical Mouse: Found scroll wheel(s)
[ 13.630] (--) evdev: Logitech USB Optical Mouse: Found relative axes
[ 13.630] (--) evdev: Logitech USB Optical Mouse: Found x and y relative axes
[ 13.630] (II) evdev: Logitech USB Optical Mouse: Configuring as mouse
[ 13.630] (II) evdev: Logitech USB Optical Mouse: Adding scrollwheel support
[ 13.630] (**) evdev: Logitech USB Optical Mouse: YAxisMapping: buttons 4 and 5
[ 13.630] (**) evdev: Logitech USB Optical Mouse: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[ 13.630] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:10.0/usb6/6-1/6-1:1.0/0003:046D:C05A.0002/input/input7/event4"
[ 13.630] (II) XINPUT: Adding extended input device "Logitech USB Optical Mouse" (type: MOUSE, id 9)
[ 13.631] (II) evdev: Logitech USB Optical Mouse: initialized for relative axes.
[ 13.631] (**) Logitech USB Optical Mouse: (accel) keeping acceleration scheme 1
[ 13.631] (**) Logitech USB Optical Mouse: (accel) acceleration profile 0
[ 13.631] (**) Logitech USB Optical Mouse: (accel) acceleration factor: 2.000
[ 13.631] (**) Logitech USB Optical Mouse: (accel) acceleration threshold: 4
[ 13.631] (II) config/udev: Adding input device Logitech USB Optical Mouse (/dev/input/mouse0)
[ 13.631] (II) No input driver specified, ignoring this device.
[ 13.631] (II) This device may have been added with another device file.
[ 13.631] (II) config/udev: Adding input device Dell Dell USB Keyboard (/dev/input/event5)
[ 13.631] (**) Dell Dell USB Keyboard: Applying InputClass "evdev keyboard catchall"
[ 13.631] (**) Dell Dell USB Keyboard: Applying InputClass "evdev keyboard catchall"
[ 13.631] (II) Using input driver 'evdev' for 'Dell Dell USB Keyboard'
[ 13.631] (**) Dell Dell USB Keyboard: always reports core events
[ 13.631] (**) evdev: Dell Dell USB Keyboard: Device: "/dev/input/event5"
[ 13.631] (--) evdev: Dell Dell USB Keyboard: Vendor 0x413c Product 0x2105
[ 13.631] (--) evdev: Dell Dell USB Keyboard: Found keys
[ 13.631] (II) evdev: Dell Dell USB Keyboard: Configuring as keyboard
[ 13.632] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:10.0/usb6/6-2/6-2:1.0/0003:413C:2105.0003/input/input8/event5"
[ 13.632] (II) XINPUT: Adding extended input device "Dell Dell USB Keyboard" (type: KEYBOARD, id 10)
[ 13.632] (**) Option "xkb_rules" "evdev"
[ 13.632] (**) Option "xkb_model" "pc105"
[ 13.632] (**) Option "xkb_layout" "us"
[ 13.632] (II) config/udev: Adding input device USB AUDIO (/dev/input/event3)
[ 13.632] (**) USB AUDIO : Applying InputClass "evdev keyboard catchall"
[ 13.632] (**) USB AUDIO : Applying InputClass "evdev keyboard catchall"
[ 13.632] (II) Using input driver 'evdev' for 'USB AUDIO '
[ 13.632] (**) USB AUDIO : always reports core events
[ 13.632] (**) evdev: USB AUDIO : Device: "/dev/input/event3"
[ 13.632] (--) evdev: USB AUDIO : Vendor 0x1130 Product 0x1620
[ 13.632] (--) evdev: USB AUDIO : Found keys
[ 13.632] (II) evdev: USB AUDIO : Configuring as keyboard
[ 13.632] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:13.0/usb4/4-3/4-3:1.2/0003:1130:1620.0001/input/input6/event3"
[ 13.632] (II) XINPUT: Adding extended input device "USB AUDIO " (type: KEYBOARD, id 11)
[ 13.632] (**) Option "xkb_rules" "evdev"
[ 13.632] (**) Option "xkb_model" "pc105"
[ 13.632] (**) Option "xkb_layout" "us"
[ 13.633] (II) config/udev: Adding input device HD-Audio Generic Front Mic (/dev/input/event7)
[ 13.633] (II) No input driver specified, ignoring this device.
[ 13.633] (II) This device may have been added with another device file.
[ 13.633] (II) config/udev: Adding input device HD-Audio Generic Rear Mic (/dev/input/event8)
[ 13.633] (II) No input driver specified, ignoring this device.
[ 13.633] (II) This device may have been added with another device file.
[ 13.633] (II) config/udev: Adding input device HD-Audio Generic Line (/dev/input/event9)
[ 13.633] (II) No input driver specified, ignoring this device.
[ 13.633] (II) This device may have been added with another device file.
[ 13.633] (II) config/udev: Adding input device HD-Audio Generic Line Out (/dev/input/event10)
[ 13.633] (II) No input driver specified, ignoring this device.
[ 13.633] (II) This device may have been added with another device file.
[ 13.634] (II) config/udev: Adding input device HD-Audio Generic Front Headphone (/dev/input/event11)
[ 13.634] (II) No input driver specified, ignoring this device.
[ 13.634] (II) This device may have been added with another device file.
That seems to show that it's detecting the monitor. I'm not sure. I haven't been able to figure out what this issue is, and I wanted to only ask here as a last resort once I found myself completely stumped. So here I am. Can anyone help me?
