Bug 718000 - Right edge of the screen is cut off
Summary: Right edge of the screen is cut off
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Fedora
Classification: Fedora
Component: xorg-x11-drv-nouveau
Version: 15
Hardware: i686
OS: Linux
unspecified
unspecified
Target Milestone: ---
Assignee: Ben Skeggs
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-06-30 15:55 UTC by Jean-François Fortin Tam
Modified: 2012-08-07 15:37 UTC (History)
3 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2012-08-07 15:37:08 UTC
Type: ---
Embargoed:


Attachments (Terms of Use)
photo (675.45 KB, image/jpeg)
2011-06-30 15:55 UTC, Jean-François Fortin Tam
no flags Details
tvdump (31.19 KB, text/plain)
2011-07-10 21:07 UTC, Jean-François Fortin Tam
no flags Details

Description Jean-François Fortin Tam 2011-06-30 15:55:14 UTC
Created attachment 510711 [details]
photo

With the nouveau driver on a geforce 6200 connected to a VGA LCD panel, the right edge of the screen's image is "cut off", as the attached photo demonstrates.

This does not occur with the integrated intel graphics on that machine or with the proprietary nvidia drivers (however the nvidia drivers seem to butcher the fonts for some reason, as if it squeezed the image into place).

This is not an issue of adjusting the LCD screen:
- auto adjustment does not solve the problem
- manual adjustment reveals that the input image is the one being cropped; changing the horizontal position on the monitor moves the image but it is still cut off.

Comment 1 Ben Skeggs 2011-07-01 03:52:38 UTC
To my knowledge this appears to be a hardware limitation (a mode's width/height must be a multiple of 8).  Nouveau is programming the CRTC for 1360x768, while it is rendering to 1366x768 still, hence the chopped off bits :)

I presume the NVIDIA binary driver works around this in some way or other, are you able to post a verbose Xorg.0.log from running it for me?  ("startx -- -logverbose 999" should do it).

If you're feeling really keen, you could also grab and install http://cgit.freedesktop.org/~currojerez/tvdump and run this while the NVIDIA binary driver is running.  It'll capture the relevant setup and we can see what they did a bit better.

Thanks!

Comment 2 Jean-François Fortin Tam 2011-07-10 21:06:48 UTC
I have been unable to "startx --logverbose 999", it would try to start, black screen then throw me back at the terminal (I had stopped X/gdm with "service prefdm stop" beforehand)... however, here is the register dump from tvdump.

Comment 3 Jean-François Fortin Tam 2011-07-10 21:07:13 UTC
Created attachment 512111 [details]
tvdump

Comment 4 Fedora End Of Life 2012-08-07 15:37:10 UTC
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