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On the volume icon on the desktop, there should be an icon of the external HDMI device. Press that and you should be able to disable that device for sound and it will automatically use the built in sound of your laptop.


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I guess VGA1 is your laptop screen. To use the HDMI output you usually have to press a function key on the laptop keyboard. It should have an icon of a monitor on it. Connect the HDMI to a monitor then use the function key to toggle between VGA, HDMI and BOTH.


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You have to add a new mode with a new resolution... You can do it and apply the new resolution using the command: xrandr --addmode <connection_type> 1200x1000_60.00 Where <connection_type> is usually VGA1, DP1 or HDMI1.


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Figured it out, I tried apt-get install nvidia-current and it never worked, then i realized i had to type sudo apt-get install nvidia-current. that worked and all is good now


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Following command to install the pulse audio volume control sudo apt-get update sudo apt-get install pavucontrol do a search for the app or execute pavucontrol. This is not the same as the volume control on your panel. You will have more control over card selection and assigning devices. Also, sometimes unplugging and plugging the HDMI back in ...


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Your HP620 has an old GM45 Graphic Chipset, this chipset work as an on demand process. Meaning once you plug it into the HDMI port you automatically see it, since Ubuntu works kinda the same way. The bios will also load on screen as well, making it a nice thing to have.


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I had the same problem on a 40 inch Micromax Full HD TV To solve it, I set the panorama aspect ratio on the TV remote.


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So after some experiments and with small luck i found out that i had to regenerate my xorg.conf file using command: sudo nvidia-xconfig. after that restart lightdm and thats it ;) additionally in display settings(not nvidia-settings) you probably will have to choose that all is align by laptop screen


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You can reset all the pulseaudio User Configuration rm - rf .config/pulse; pulseaudio -k This file is known to get corrupted, and you said you did an upgrade so this seem plausible.


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I ran into the same problem with Intel Corporation Broadwell-U Integrated Graphics (rev 09) after a dist-upgrade to 14.10 and kernel 3.17.4 (multistream support). Interacting with affected windows (moving, mouse-over) restores the missing chars.



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