ArnoVersfeld's questions

1. Since I have installed Ubuntu 20.04 my PC comes up with the grub boot screen where I'm supposed to be able to use the keyboard to either resume with the boot process or carry out some other process, BUT, the keyboard appears to be dead since grub does not respond. This is not a dual boot system.emphasized text
2. The only way to get the keyboard to work with grub is to disconnect the hard drives and switch the PC on. I then go into the BIOS and simply save and exit (making no changes) and then switch the PC off. I reconnect the hard drives and switch on the PC. When it gets to the grub screen and I hit enter, or arrow keys, grub responds immediately. The next time I boot up my PC, without disconnecting the hard drives, grub does not respond to the keyboard.
3. I also found that unless I disconnect the hard drives I cannot get to the BIOS settings using the usual "delete" or F2 keys which is something you are supposed to be able to do.
4. I've tried to change "auto" settings to enable and visa versa but none of these changes made any difference to the problem, which I didn't have with Ubuntu 18.04. I even disabled UEFI.
5. Does grub dynamically store BIOS info on the hard disk that is then used at boot time by the OS, in this case Ubuntu ? PLEASE HELP !

When I try playing an mkv file with vlc I get: Codec not supported: VLC could not decode the format "av01" (AOMedia's AV1 Video)

When I close the message the file actually plays only the sound track BUT NOT THE VIDEO.

How do I fix the problem. Thank you folks for anyone who can help me.

I installed Ubuntu 18.04 last week and everything works beautifully except that the "printing" icon is missing from "Show Applications".
When I run "system-config-printer" from a terminal the "Printers - localhost" opens up and shows the network printer.
When I use Synaptic and search for "system-config-printer-common" it finds it and shows installed version 1.5.11-1ubuntu2.
When I run "system-config-printer" from a terminal the following displays before the app is opened:

root@Ubuntu-18:/home/arno# system-config-printer
Error creating proxy: The connection is closed (g-io-error-quark, 18)
Error creating proxy: The connection is closed (g-io-error-quark, 18)
Error creating proxy: The connection is closed (g-io-error-quark, 18)
Error creating proxy: The connection is closed (g-io-error-quark, 18)
Error creating proxy: The connection is closed (g-io-error-quark, 18)

(system-config-printer:6764): libnotify-WARNING **: 07:14:35.760: Failed to connect to proxy

Could this anything to do with the missing icon ?

I tried printing a document and nothing happens. When I right click on the printer and select the "View Print Queue" then there are no document in the queue.
In /var/spool/cups I find:

root@Ubuntu-18:/var/spool/cups# ls -la
total 224
drwx--x--- 3 root lp     4096 May 30 07:07 .
drwxr-xr-x 8 root root   4096 May 25 18:12 ..
-rw------- 1 root lp     2684 May 28 10:27 c00001
-rw------- 1 root lp     2684 May 28 10:27 c00002
-rw------- 1 root lp     2684 May 28 10:33 c00003
-rw------- 1 root lp     2668 May 30 07:07 c00004
-rw-r----- 1 root lp    32282 May 28 10:27 d00001-001
-rw-r----- 1 root lp    32282 May 28 10:27 d00002-001
-rw-r----- 1 root lp    32282 May 28 10:33 d00003-001
-rw-r----- 1 root lp   101287 May 30 07:07 d00004-001
drwxrwx--T 2 root lp     4096 May 30 07:07 tmp

How do I fix the problem ? Please help !

I'm running an Ubuntu 16.04 machine on QEMU/KVM. I created a new user, atww, using Settings/User Accounts on the VM. The user account type is Administrator. I used usermod -p atww atww to set the password of user atww to atww. When I try logging in with atww and password atww I get "Invalid password, please try again" passwd -aS | grep atww gives atww P 01/09/2018 0 99999 7 -1 which seems to be correct. Is it ? Please help ! Many thanks, Arno

I have been trying to get a TV card and mplayer to work on ubuntu 16.04. I get the picture but no sound. I opened System Settings / Sound and clicked on "Sound Test" then clicked on "Front Left" then on "Front Right" but get no sound at all. When I use VLC to play a video or music the sound is good.

My monitor is connected via an HDMI cable but the HDMI sound is muted.The speakers are plugged into the on-board sound device.

How do I get the "Sound" app to function properly ?

I'm using Ubuntu 16.04. I installed a Hauppauge Win TV-HVR-2200 MC card and did the following (from Help with hauppauge wintv-hvr-2250 on ubuntu 13.04):

I copied these files

NXP7164-2010-03-10.1.fw
v4l-saa7164-1.0.2-3.fw
v4l-saa7164-1.0.3-3.fw

to /lib/firmware

you can get them from here http://www.steventoth.net/linux/hvr22xx/firmwares/

just look through the folders and you'll find them.

reboot and they should load.

you can check with dmesg | grep saa7164

When I type dmesg | grep saa7164 at the command prompt I get nothing.

I opened VLC and it displays Hauppauge WinTV-HVR2200 but plays nothing.

When I type mplayer tv:// at the command prompt I get:

MPlayer 1.2.1 (Debian), built with gcc-5.3.1 (C) 2000-2016 MPlayer Team
Can't open joystick device /dev/input/js0: No such file or directory
Can't init input joystick
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing tv://.
TV file format detected.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <[email protected]>
 comment: first try, more to come ;-)
Selected device: Hauppauge WinTV-HVR2200
 Tuner cap: STEREO
 Tuner rxs:
 Capabilities:  video capture  VBI capture device  tuner  read/write
 supported norms: 0 = NTSC-M; 1 = NTSC-M-JP;
 inputs: 0 = tuner; 1 = composite; 2 = svideo; 3 = aux; 4 = composite 2; 5 = svideo 2; 6 = aux 2;
 Current input: 0
 Current format: unknown (0x4745504d)
v4l2: current audio mode is : MONO
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
v4l2: ioctl request buffers failed: Inappropriate ioctl for device
v4l2: ioctl set mute failed: Invalid argument
v4l2: 0 frames successfully processed, 0 frames dropped.
Exiting... (End of file)

Both mplayer and vlc recognise the Hauppauge WinTV-HVR2200 card, why does dmesg | grep saa7164 display nothing ? Is there anyone who can help me please ?

At home I run Ubuntu 16.04 x64. At the office I installed Ubuntu 16.04 x86 due to available hardware. The 64-bit and 32-bit versions of Unity are not the same. Can it be that the 32-bit version is an early version of Unity?

I run Ubuntu 14.04 LTS.

I want to record output from a digital decoder to disk so that it can be watched later on.

Just to clarify the matter; instead of displaying, or while displaying, the output from the decoder on a TV screen, I want to record what is being output from the decoder in mp4 or avi format.

My question is: Does any software exist that will run on Ubuntu that will do the recording? What hardware will be have to be used with the software to enable the software to record the decoder's output?

What I am wanting to do is not the same as the question on "Record Live Streaming - cmks" which is streaming from a website. I'm wanting to record what a decoder is receiving from a satelite and sending to my tv via HDMI or RCA cables.

I found this hardware on eBay that will most likely do the job. All the items are sold with software for Windows. I'd like to avoid using Windows.

Many thanks for any help I can get.

I use Ubuntu 12.04 LTS on a dual boot system. I upgraded my PC's motherboard to Gigabyte GA-H77M-D3H motherboard. 12.04 no longer sees the network interface ! I now want to upgrade to 13.04. Is there a 13.04 download I can put onto a DVD and then upgrade 12.04 after I have booted up 12.04 ?