Gentoo Archives: gentoo-user

From: wabenbau@×××××.com
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] radeon screen resolution
Date: Tue, 29 Dec 2015 17:15:33
Message-Id: 20151229181437.26036eca@hal9000.localdomain
In Reply to: Re: [gentoo-user] radeon screen resolution by john
1 john <jdm@××××××××××××.uk> wrote:
2
3 > On Tue, 29 Dec 2015 11:05:12 +0200
4 > Alan McKinnon <alan.mckinnon@×××××.com> wrote:
5 >
6 > > On 29/12/2015 11:01, Mick wrote:
7 > > > On Tuesday 29 Dec 2015 02:00:33 wabenbau@×××××.com wrote:
8 > > >
9 > > >> There is a kernel option DRM_LOAD_EDID_FIRMWARE. It allows you to
10 > > >> specify an EDID data set instead of probing for it. If your
11 > > >> problem is caused by broken EDID data, this option maybe will
12 > > >> help you to run the monitor at its full resolution.
13 > > >>
14 > > >> --
15 > > >> Regards
16 > > >> wabe
17 > > >
18 > > > How would you know what to specify for EDID data, unless the
19 > > > monitor told you what it is?
20 > > >
21 > >
22 > > or if the monitor manufacturer told you what it should be
23 > >
24 > > /alanm
25 > >
26 >
27 > I have had a play with that but no success yet. I have followed the
28 > howto but no success yet but I think now I will have to find .bin file
29 > or settings from manufacturer.
30
31 Maybe you can somehow extract it (hexedit?) from the windows monitor
32 driver that was probably delivered with the monitor.
33
34 After I installed the driver for the LG monitor, I was able to use it
35 at full resolution under windows. So I think that the EDID data (or
36 something equivalent) was included in the driver.
37
38 I never used that kernel option. So I can't tell you more.
39
40 --
41 Regards
42 wabe