HDMI no longer working in 16.04

[dashell2]

So I upgraded to 16.04 (I know I'm late) and today I wanted to use my HDMI to watch a movie on my computer on my TV (if that makes sense) but even though it's connected, it just doesn't show up. Usually when I turn the TV on, what's on the computer displays on the TV... I tried to reboot with the TV on to see if that would help and... I don't quite know how to explain what happened, but what appeared on the TV was my desktop proper... but what was on the computer was my desktop with the wrong background and no menus available. That was quite strange. Also when I check sound, I can set the sound to HDMI but no actual sound comes out the TV when I do this.

Does anyone have any ideas what's going on? I know my graphics card is an AMD if that matters.


EDIT
okay tried the reboot with the TV on again to see if maybe it'd work this time and I figured out what's going on... it's basically treating my TV as an extended monitor. If I move my mouse over to the right on the TV it appears on my computer monitor and vice versa. Is there a way to get it to display the same thing on both or flip them around?? This is really weird.

[sudodus]

Yes, you can display the same picture on the internal screen and the external one, but it will limit the resolution to that of the screen with lowest resolution (probably the internal screen). It can be a good idea to have this 'extended monitor mode'.

What happens it you move the window of your video playing program to the TV screen, and when it is there, make it full-screen?

[dashell2]

What happens it you move the window of your video playing program to the TV screen, and when it is there, make it full-screen?



which is what I ended up doing, but the problem still exists that when I turn my TV off, I'm stuck with the desktop without menus on my computer. What I have to do, apparently, is turn the TV on, log out, do what you just said, and when I'm done, log out again, turn off the TV and log back in to get it to reset which is an odd amount of work. So I'm wondering, is it possible to switch the screens? Have the desktop without the menus appear on my TV instead of the computer?

[sudodus]

I don't run any system with two monitors, I only test it occasionally (particularly with new versions), so I don't know a convenient way.

If you, who a reading this thread, know how to manage two monitors in a good way, please chip in and help us :-)

[QIII]

Hello!

What model of AMD graphics adapter? What are the rest of your machine's specifications?

AMD graphics drivers are in a state of flux at them moment and depending on your adapter you may have some difficulty.

[dashell2]

okay specs:

https://s31.postimg.org/7q621czbf/specs.png
let me know if you need more than that


as for graphics card
Radeon R7 240/340





edit
I did another command just in case:


fredii description: Desktop Computer
product: MS-7850 (To be filled by O.E.M.)
vendor: MSI
version: 1.0
serial: To be filled by O.E.M.
width: 64 bits
capabilities: smbios-2.8 dmi-2.7 vsyscall32
configuration: administrator_password=disabled boot=normal chassis=desktop family=To be filled by O.E.M. frontpanel_password=disabled keyboard_password=disabled power-on_password=disabled sku=To be filled by O.E.M. uuid=00000000-0000-0000-0000-448A5BA4D04D
*-core
description: Motherboard
product: Z97 PC Mate(MS-7850)
vendor: MSI
physical id: 0
version: 1.0
serial: To be filled by O.E.M.
slot: To be filled by O.E.M.
*-firmware
description: BIOS
vendor: American Megatrends Inc.
physical id: 0
version: V4.3
date: 06/27/2014
size: 64KiB
capacity: 8128KiB
capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer acpi usb biosbootspecification uefi
*-cpu
description: CPU
product: Intel(R) Pentium(R) CPU G3258 @ 3.20GHz
vendor: Intel Corp.
physical id: 3d
bus info: cpu@0
version: Intel(R) Pentium(R) CPU G3258 @ 3.20GHz
slot: SOCKET 0
size: 3200MHz
capacity: 3800MHz
width: 64 bits
clock: 100MHz
capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg cx16 xtpr pdcm pcid sse4_1 sse4_2 movbe popcnt tsc_deadline_timer xsave rdrand lahf_lm abm tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust erms invpcid xsaveopt dtherm ida arat pln pts cpufreq
configuration: cores=2 enabledcores=2 threads=2
*-cache:0
description: L1 cache
physical id: 3e
slot: CPU Internal L1
size: 128KiB
capacity: 128KiB
capabilities: synchronous internal write-back
configuration: level=1
*-cache:1
description: L2 cache
physical id: 3f
slot: CPU Internal L2
size: 512KiB
capacity: 512KiB
capabilities: synchronous internal write-back unified
configuration: level=2
*-cache:2
description: L3 cache
physical id: 40
slot: CPU Internal L3
size: 3MiB
capacity: 3MiB
capabilities: synchronous internal write-back unified
configuration: level=3
*-memory
description: System Memory
physical id: 42
slot: System board or motherboard
size: 8GiB
*-bank:0
description: DIMM DDR3 Synchronous 1333 MHz (0.8 ns)
vendor: 0000
physical id: 0
serial: 00000061
slot: ChannelA-DIMM0
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:1
description: DIMM DDR3 Synchronous 1333 MHz (0.8 ns)
vendor: 0000
physical id: 1
serial: 00000061
slot: ChannelA-DIMM1
size: 4GiB
width: 64 bits
clock: 1333MHz (0.8ns)
*-bank:2
description: DIMM [empty]
product: [Empty]
vendor: [Empty]
physical id: 2
serial: [Empty]
slot: ChannelB-DIMM0
*-bank:3
description: DIMM [empty]
product: [Empty]
vendor: [Empty]
physical id: 3
serial: [Empty]
slot: ChannelB-DIMM1
*-pci
description: Host bridge
product: 4th Gen Core Processor DRAM Controller
vendor: Intel Corporation
physical id: 100
bus info: pci@0000:00:00.0
version: 06
width: 32 bits
clock: 33MHz
configuration: driver=hsw_uncore
resources: irq:0
*-pci:0
description: PCI bridge
product: Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller
vendor: Intel Corporation
physical id: 1
bus info: pci@0000:00:01.0
version: 06
width: 32 bits
clock: 33MHz
capabilities: pci pm msi pciexpress normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:24 ioport:e000(size=4096) memory:f7e00000-f7efffff ioport:e0000000(size=268435456)
*-display
description: VGA compatible controller
product: Oland PRO [Radeon R7 240/340]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0
bus info: pci@0000:01:00.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
configuration: driver=radeon latency=0
resources: irq:28 memory:e0000000-efffffff memory:f7e00000-f7e3ffff ioport:e000(size=256) memory:f7e40000-f7e5ffff
*-multimedia
description: Audio device
product: Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series]
vendor: Advanced Micro Devices, Inc. [AMD/ATI]
physical id: 0.1
bus info: pci@0000:01:00.1
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm pciexpress msi bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:31 memory:f7e60000-f7e63fff
*-usb:0
description: USB controller
product: 9 Series Chipset Family USB xHCI Controller
vendor: Intel Corporation
physical id: 14
bus info: pci@0000:00:14.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi xhci bus_master cap_list
configuration: driver=xhci_hcd latency=0
resources: irq:25 memory:f7f00000-f7f0ffff
*-usbhost:0
product: xHCI Host Controller
vendor: Linux 4.4.0-31-generic xhci-hcd
physical id: 0
bus info: usb@4
logical name: usb4
version: 4.04
capabilities: usb-3.00
configuration: driver=hub slots=6 speed=5000Mbit/s
*-usbhost:1
product: xHCI Host Controller
vendor: Linux 4.4.0-31-generic xhci-hcd
physical id: 1
bus info: usb@3
logical name: usb3
version: 4.04
capabilities: usb-2.00
configuration: driver=hub slots=14 speed=480Mbit/s
*-usb:0
description: Generic USB device
product: Gamepad F310
vendor: Logitech
physical id: 3
bus info: usb@3:3
version: 40.14
serial: E1292D8C
capabilities: usb-2.00
configuration: driver=xpad maxpower=500mA speed=12Mbit/s
*-usb:1
description: Video
product: Webcam C270
vendor: Logitech, Inc.
physical id: 9
bus info: usb@3:9
version: 0.12
serial: 10E6DF50
capabilities: usb-2.00
configuration: driver=snd-usb-audio maxpower=500mA speed=480Mbit/s
*-communication
description: Communication controller
product: 9 Series Chipset Family ME Interface #1
vendor: Intel Corporation
physical id: 16
bus info: pci@0000:00:16.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=mei_me latency=0
resources: irq:29 memory:f7f19000-f7f1900f
*-usb:1
description: USB controller
product: 9 Series Chipset Family USB EHCI Controller #2
vendor: Intel Corporation
physical id: 1a
bus info: pci@0000:00:1a.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:16 memory:f7f17000-f7f173ff
*-usbhost
product: EHCI Host Controller
vendor: Linux 4.4.0-31-generic ehci_hcd
physical id: 1
bus info: usb@1
logical name: usb1
version: 4.04
capabilities: usb-2.00
configuration: driver=hub slots=2 speed=480Mbit/s
*-usb
description: USB hub
vendor: Intel Corp.
physical id: 1
bus info: usb@1:1
version: 0.00
capabilities: usb-2.00
configuration: driver=hub slots=6 speed=480Mbit/s
*-multimedia
description: Audio device
product: 9 Series Chipset Family HD Audio Controller
vendor: Intel Corporation
physical id: 1b
bus info: pci@0000:00:1b.0
version: 00
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:30 memory:f7f10000-f7f13fff
*-pci:1
description: PCI bridge
product: 9 Series Chipset Family PCI Express Root Port 1
vendor: Intel Corporation
physical id: 1c
bus info: pci@0000:00:1c.0
version: d0
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:16 ioport:2000(size=4096) memory:f0100000-f02fffff ioport:f0300000(size=2097152)
*-pci:2
description: PCI bridge
product: 9 Series Chipset Family PCI Express Root Port 6
vendor: Intel Corporation
physical id: 1c.5
bus info: pci@0000:00:1c.5
version: d0
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm normal_decode bus_master cap_list
configuration: driver=pcieport
resources: irq:17 ioport:d000(size=4096) memory:f7d00000-f7dfffff ioport:f0000000(size=1048576)
*-network
description: Ethernet interface
product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:03:00.0
logical name: eth0
version: 0c
serial: 44:8a:5b:a4:d0:4d
size: 100Mbit/s
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168g-2_0.0.1 02/06/13 ip=192.168.0.100 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
resources: irq:27 ioport:d000(size=256) memory:f7d00000-f7d00fff memory:f0000000-f0003fff
*-pci:3
description: PCI bridge
product: 82801 PCI Bridge
vendor: Intel Corporation
physical id: 1c.6
bus info: pci@0000:00:1c.6
version: d0
width: 32 bits
clock: 33MHz
capabilities: pci pciexpress msi pm subtractive_decode bus_master cap_list
*-pci
description: PCI bridge
product: ASM1083/1085 PCIe to PCI Bridge
vendor: ASMedia Technology Inc.
physical id: 0
bus info: pci@0000:04:00.0
version: 03
width: 64 bits
clock: 33MHz
capabilities: pci msi pm pciexpress normal_decode bus_master cap_list
resources: iomemory:202001f10-202001f0f
*-usb:2
description: USB controller
product: 9 Series Chipset Family USB EHCI Controller #1
vendor: Intel Corporation
physical id: 1d
bus info: pci@0000:00:1d.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: pm debug ehci bus_master cap_list
configuration: driver=ehci-pci latency=0
resources: irq:23 memory:f7f16000-f7f163ff
*-usbhost
product: EHCI Host Controller
vendor: Linux 4.4.0-31-generic ehci_hcd
physical id: 1
bus info: usb@2
logical name: usb2
version: 4.04
capabilities: usb-2.00
configuration: driver=hub slots=2 speed=480Mbit/s
*-usb
description: USB hub
vendor: Intel Corp.
physical id: 1
bus info: usb@2:1
version: 0.00
capabilities: usb-2.00
configuration: driver=hub slots=8 speed=480Mbit/s
*-isa
description: ISA bridge
product: 9 Series Chipset Family Z97 LPC Controller
vendor: Intel Corporation
physical id: 1f
bus info: pci@0000:00:1f.0
version: 00
width: 32 bits
clock: 33MHz
capabilities: isa bus_master cap_list
configuration: driver=lpc_ich latency=0
resources: irq:0
*-storage
description: SATA controller
product: 9 Series Chipset Family SATA Controller [AHCI Mode]
vendor: Intel Corporation
physical id: 1f.2
bus info: pci@0000:00:1f.2
version: 00
width: 32 bits
clock: 66MHz
capabilities: storage msi pm ahci_1.0 bus_master cap_list
configuration: driver=ahci latency=0
resources: irq:26 ioport:f070(size=8) ioport:f060(size=4) ioport:f050(size=8) ioport:f040(size=4) ioport:f020(size=32) memory:f7f15000-f7f157ff
*-serial UNCLAIMED
description: SMBus
product: 9 Series Chipset Family SMBus Controller
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 00
width: 64 bits
clock: 33MHz
configuration: latency=0
resources: memory:f7f14000-f7f140ff ioport:f000(size=32)
*-scsi:0
physical id: 1
logical name: scsi0
capabilities: emulated
*-disk
description: ATA Disk
product: WDC WD3200AAKS-0
vendor: Western Digital
physical id: 0.0.0
bus info: scsi@0:0.0.0
logical name: /dev/sda
version: 3A01
serial: WD-WCAT11605109
size: 298GiB (320GB)
capabilities: partitioned partitioned:dos
configuration: ansiversion=5 logicalsectorsize=512 sectorsize=512 signature=e809de47
*-volume:0
description: Windows NTFS volume
physical id: 1
bus info: scsi@0:0.0.0,1
logical name: /dev/sda1
version: 3.1
serial: 508a-e918
size: 348MiB
capacity: 350MiB
capabilities: primary bootable ntfs initialized
configuration: clustersize=4096 created=2014-10-17 06:57:36 filesystem=ntfs label=System Reserved modified_by_chkdsk=true mounted_on_nt4=true resize_log_file=true state=dirty upgrade_on_mount=true
*-volume:1
description: Windows NTFS volume
physical id: 2
bus info: scsi@0:0.0.0,2
logical name: /dev/sda2
version: 3.1
serial: d8d4cf67-9143-6d46-b6c0-c57a6b03daef
size: 92GiB
capacity: 92GiB
capabilities: primary ntfs initialized
configuration: clustersize=4096 created=2014-10-17 06:57:38 filesystem=ntfs state=clean
*-volume:2
description: Extended partition
physical id: 3
bus info: scsi@0:0.0.0,3
logical name: /dev/sda3
size: 205GiB
capacity: 205GiB
capabilities: primary extended partitioned partitioned:extended
*-logicalvolume:0
description: Linux filesystem partition
physical id: 5
logical name: /dev/sda5
logical name: /
capacity: 197GiB
configuration: mount.fstype=ext4 mount.options=rw,relatime,errors=remount-ro,data=ordered state=mounted
*-logicalvolume:1
description: Linux swap / Solaris partition
physical id: 6
logical name: /dev/sda6
capacity: 8142MiB
capabilities: nofs
*-scsi:1
physical id: 2
logical name: scsi1
capabilities: emulated
*-cdrom
description: DVD-RAM writer
product: DVDRAM GH22LS40
vendor: HL-DT-ST
physical id: 0.0.0
bus info: scsi@1:0.0.0
logical name: /dev/cdrom
logical name: /dev/cdrw
logical name: /dev/dvd
logical name: /dev/dvdrw
logical name: /dev/sr0
version: LL00
capabilities: removable audio cd-r cd-rw dvd dvd-r dvd-ram
configuration: ansiversion=5 status=nodisc
*-power UNCLAIMED
description: To Be Filled By O.E.M.
product: To Be Filled By O.E.M.
vendor: To Be Filled By O.E.M.
physical id: 1
version: To Be Filled By O.E.M.
serial: To Be Filled By O.E.M.
capacity: 32768mWh
alison@FredII:~$

[Bucky Ball]

Plug the computer into the TV. Switch TV on, boot computer. Go to 'Display' and set the displays how you want to see them (mirrored, side by side, etc) then set the resolutions to whatever you like for each monitor. You are not limited to the monitor with the lowest resolution. You can set each monitor independently.

I have two machines with dual-monitors, a desktop and a laptop (and the laptop is using an AMD GPU), and another machine I plug into the TV on a regular basis. This is how they all work. Good luck.

PS: Please use code tags for terminal output (instructions in my signature). I have added them to your last post.

[dashell2]

Okay thanks, that did the trick. ^_^

[Bucky Ball]

Excellent news! :)

Please mark the thread as solved to help others using Thread Tools at top right of page or follow instructions in link in my signature. Cheers and enjoy. :)