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hotvic

Member

Registered: 2013-02-11

Posts: 109

[Solved] radeon + 1360x768 result in screen cut

Hi,

I've a Radeon 9600 and a Philips 161Vw (native resolution 1360x768) the monitor resolutions is detected correct (I think), but the screen is cut on right side, I think that the cut part is +/- 10px, this only is a problem for scroll, because thin scrollbar is cut.

If I set 1366x768 as resolution (cvt-xrandr) this doesn't occur.

I can remember that a year ago (when used windows) this only occur with windows's driver, with ATI driver all are shown correct without cut.

Sorry my english and thanks in advance!

Last edited by hotvic (2013-08-01 02:16:54)

Roberth

Member

From: The Pale Blue Dot

Registered: 2007-01-12

Posts: 894

Re: [Solved] radeon + 1360x768 result in screen cut

Does the monitor have a function to autoadjust itself? I also have problem with this on certain computers, and making the monitor readjust itself has always worked for me.

---

Use the Source, Luke!

hotvic

Member

Registered: 2013-02-11

Posts: 109

Re: [Solved] radeon + 1360x768 result in screen cut

yes, the monitor have this functionality I've used this a lot of times but not helping, the problem isn't in monitor I say this because if I move screen on monitor settings to left the image is cut also so it isn't cut on monitor borders

WonderWoofy

Member

From: Los Gatos, CA

Registered: 2012-05-19

Posts: 8,414

Re: [Solved] radeon + 1360x768 result in screen cut

Maybe it is a buggy/crappy EDID?  There is some documentation included in the linux-docs package about using a custom EDID.  Install the package and it can be found at /usr/src/linux-$(uname -r)/Documentation/EDID/HOWTO.txt (of course where 'uname -r' is the kernel version).

hotvic

Member

Registered: 2013-02-11

Posts: 109

Re: [Solved] radeon + 1360x768 result in screen cut

I've read this earlier I'm no expert on this, and not have manual or something with Monitor's info.
would be more feasible install windows and catalyst and then export EDID from windows ?

Last edited by hotvic (2013-07-27 13:22:27)

hotvic

Member

Registered: 2013-02-11

Posts: 109

Re: [Solved] radeon + 1360x768 result in screen cut

I've installed windows and extracted EDID from them(using phoenix edid designer), copied to /etc/X11 and modified /etc/X11/xorg.conf.d/20-radeon.conf:

Section "Device"
    Identifier          "Radeon 9600"
    Driver              "radeon"
    Option             "EnablePageFlip" "on"
    Option             "CustomEDID" "VGA-0:/etc/X11/phl_161vw.raw"
EndSection

there's a resolution of 1366x768 (in xrandr) but in windows the resolution is 1360x768; it's a bit confused to me :S

Last edited by hotvic (2013-07-27 13:27:59)

hotvic

Member

Registered: 2013-02-11

Posts: 109

Re: [Solved] radeon + 1360x768 result in screen cut

I'm having other problem, headache, only five minutes next to screen and got headache that isn't common, I think that the cause is refresh rate but don't know how to solve this.

hotvic

Member

Registered: 2013-02-11

Posts: 109

Re: [Solved] radeon + 1360x768 result in screen cut

Oh, I'm wrong! for set custom EDID with KMS I need copy it into /lib/firmware/edid and then add:

drm_kms_helper.edid_firmware=DVI-I-1:edid/phl_161vw.bin

to kernel parameters.
I've do this the cut part is smaller now but yet exists now it's +/- 3px

Apparently the EDID is loaded:

$ dmesg | grep 'EDID'
[   12.692888] [drm] Got external EDID base block and 0 extensions from "edid/phl_161vw.bin" for connector "DVI-I-1"
[   19.912639] [drm] Got external EDID base block and 0 extensions from "edid/phl_161vw.bin" for connector "DVI-I-1"
[   19.950743] [drm] Got external EDID base block and 0 extensions from "edid/phl_161vw.bin" for connector "DVI-I-1"
[   57.358953] [drm] Got external EDID base block and 0 extensions from "edid/phl_161vw.bin" for connector "DVI-I-1"

hotvic

Member

Registered: 2013-02-11

Posts: 109

Re: [Solved] radeon + 1360x768 result in screen cut

someone ? after a year suffering with this I'm a bit frustrated with this problem

Edit:

Instead of use EDID from windows now I've got Modeline from PowerStrip program on windows, and now is wonderful, not cut

Edit 2:

It can be a bug in 'radeon' calculating Modelines ? is recommended report as bug ? If yes, where ? in kernel DRM ?

Last edited by hotvic (2013-08-01 02:24:04)