Gentoo Archives: gentoo-user

From: Paul Hartman <paul.hartman+gentoo@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] New HD monitor stretches everything. How to teach Xorg?
Date: Wed, 25 Aug 2010 14:58:47
Message-Id: AANLkTimbcXVd3r27JetpaUSSeQ2PQPp3VevYpiY2_6YO@mail.gmail.com
In Reply to: Re: [gentoo-user] New HD monitor stretches everything. How to teach Xorg? by Mick
1 On Wed, Aug 25, 2010 at 9:44 AM, Mick <michaelkintzios@×××××.com> wrote:
2 > On 25 August 2010 15:38, Paul Hartman <paul.hartman+gentoo@×××××.com> wrote:
3 >> On Wed, Aug 25, 2010 at 9:25 AM, Mick <michaelkintzios@×××××.com> wrote:
4 >>> On 25 August 2010 15:17, Paul Hartman <paul.hartman+gentoo@×××××.com> wrote:
5 >>>> On Tue, Aug 24, 2010 at 7:03 PM, Kevin O'Gorman <kogorman@×××××.com> wrote:
6 >>>>> I found the specs with Hsync and VSync limits, but they don't mention the
7 >>>>> clock speed.  I guess I'll just have to fool with it until it works or
8 >>>>> catches fire.
9 >>>>
10 >>>> That basically describes the way I've done my X monitor settings for
11 >>>> the past 10 years or so. I just made up a bunch of numbers and hope
12 >>>> they accidentally work. :) Now I'm thankful for EDID in monitors and
13 >>>> smarter video drivers.
14 >>>
15 >>> I think that if xrandr -q does not show the resolution you are
16 >>> seeking, then the video card or driver in question cannot provide it.
17 >>> I'm not sure that feeding xorg any odd modeline will change things,
18 >>> plus unlike a CRT monitor, LCDs only provide a clear image at their
19 >>> native resolution (denoted by '+' in the xrandr list of resolutions)
20 >>
21 >> I've been able to generate modelines in the past for all kinds of
22 >> crazy non-standard resolutions. I think the ones listed may be the
23 >> ones defined in the card's BIOS.
24 >>
25 >> I just remembered about CVT, I think it's what I used to generate the
26 >> modelines I posted earlier. It is part of the x11-base/xorg-server
27 >> package and will generate the frequencies and everything for you based
28 >> on VESA standards. You simply give it X and Y resolution and it does
29 >> the rest. For example:
30 >>
31 >> $ cvt 1280 720
32 >> # 1280x720 59.86 Hz (CVT 0.92M9) hsync: 44.77 kHz; pclk: 74.50 MHz
33 >> Modeline "1280x720_60.00"   74.50  1280 1344 1472 1664  720 723 728
34 >> 748 -hsync +vsync
35 >
36 > Fair enough, but anything other than the native resolution on an LCD
37 > monitor will end looking distorted or blurred.
38
39 Of course, and I agree completely, but what I was going for was at
40 least he can get blurry 16:9 that fills the whole screen rather than
41 4:3 that is either stretched or leaves gaps on the sides. :)

Replies

Subject Author
Re: [gentoo-user] New HD monitor stretches everything. How to teach Xorg? Kevin O'Gorman <kogorman@×××××.com>