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HDMI overscan problem (borders of X display extend beyond TV screen)

asked 2015-03-07 21:51:56 -0500

TravLR gravatar image

updated 2015-03-08 10:28:05 -0500

mether gravatar image

When I plug in my Dell netbook to my TV via hdmi, the borders of X seem to extend beyond the physical screen itself. I can't see the GNOME overview dash or workspace switcher, or even the top bar. How can I adjust or resolve this?

Running Fedora 21 workstation x64 with GNOME 3.14 on Dell Inspiron 11 3000 series (3137 model), Intel graphics & Intel Haswell graphics driver.

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Does your TV have an auto-adjust button in a similar way that most monitors do? If you hit that, it should sort the display out - I know that worked on our telly when I plugged a PC into it via hdmi a year or so ago.

cobra gravatar imagecobra ( 2015-03-09 14:15:18 -0500 )edit

I'm having this same problem. I'm not quite sure where to find this "auto adjust" button or feature, but I'm going to look for it.

It's interesting that in Fedora, I can't see the edges of the screen, just like the OP, but in Windows 8, the full screen shows, but it's much smaller with quite a bit of "dead" space around it on all sides. For watching video, the Fedora "problem" is a much better one to have.

But in terms of solving the Fedora/Linux issue, I haven't yet figured anything out. I'll look again tonight and see if I can come up with anything.

passthejoe gravatar imagepassthejoe ( 2015-03-12 14:38:15 -0500 )edit

@cobra, The TV was bought in 2008, a Dynex... run o' the mill standard issue. There's no settings to adjust overscan.

TravLR gravatar imageTravLR ( 2016-02-08 13:20:12 -0500 )edit

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answered 2016-02-08 13:22:56 -0500

TravLR gravatar image

If using an Nvidia graphics card (and the latest proprietary drivers on Fedora 23), there's an "Underscan" option possibly reduce the overscan issue. I'm unsure if it will change the resolution itself, but it might be a solution.

I ended up buying a new TV before discovering this (which works perfectly... though that isn't an ideal answer), but if anyone tries this and figures out it works, maybe that'd be the best software solution.

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Asked: 2015-03-07 21:51:56 -0500

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Last updated: Mar 07 '15