Re: [gentoo-user] New HD monitor stretches everything. How to teach Xorg?

[Paul Hartman <paul.hartman+gentoo@gmail.com>]

On Tue, Aug 24, 2010 at 5:07 PM, Kevin O'Gorman <kogorman@gmail.com> wrote:
> On Tue, Aug 24, 2010 at 11:48 AM, Paul Hartman
> <paul.hartman+gentoo@gmail.com> wrote:
>>
>> On Tue, Aug 24, 2010 at 12:10 PM, Kevin O'Gorman <kogorman@gmail.com>
>> wrote:
>> >
>> >
>> > On Tue, Aug 24, 2010 at 4:27 AM, Mick <michaelkintzios@gmail.com> wrote:
>> >>
>> >> On 24 August 2010 11:23, Adam Carter <adamcarter3@gmail.com> wrote:
>> >> >
>> >> >> No.  I ditched my xorg.conf completely; it had been there just
>> >> >> because
>> >> >> I
>> >> >> couldn't get the Westinghouse monitor to work without it.  The Xorg
>> >> >> logs
>> >> >> show it recognizes a boatload of
>> >> >> modes that the monitor likes, but gives an alibi for not using the
>> >> >> HD
>> >> >> ones.  The approach
>> >> >> does not seem promising.
>> >> >>
>> >> >> /var/log/Xorg.0.log attached.  I'm paying attention to lines 269 295
>> >> >> 327
>> >> >> 369 377 380 and 381
>> >> >>
>> >> >> 269: (II) MACH64(0): Modeline "1920x1080"x0.0  148.50  1920 2008
>> >> >> 2052
>> >> >> 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz)
>> >> >> 295: (II) MACH64(0): Modeline "1920x1080"x60.0  172.80  1920 2040
>> >> >> 2248
>> >> >> 2576  1080 1081 1084 1118 -hsync +vsync (67.1 kHz)
>> >> >> 327: (II) MACH64(0): Estimated virtual size for aspect ratio 1.7931
>> >> >> is
>> >> >> 1920x1080
>> >> >> 369: (II) MACH64(0): Not using default mode "1920x1440"
>> >> >> (insufficient
>> >> >> memory for mode)
>> >> >> 377: (II) MACH64(0): Not using driver mode "1920x1080" (bad mode
>> >> >> clock/interlace/doublescan)
>> >> >> 380: (II) MACH64(0): Not using driver mode "1920x1080" (bad mode
>> >> >> clock/interlace/doublescan)
>> >> >> 381: (WW) MACH64(0): Shrinking virtual size estimate from 1920x1080
>> >> >> to
>> >> >> 1280x1024
>> >> >>
>> >> >
>> >> > I assume 269 and 295 are related to 377 and 380. I remember i had a
>> >> > lot
>> >> > of
>> >> > pain getting a Geforce 440MX to do 16:9, but it was all in the
>> >> > modelines.
>> >> > There are some modeline calculators on the web, but be warned that
>> >> > some
>> >> > of
>> >> > them produce bad output. I did eventually get it to work after a lot
>> >> > of
>> >> > trial and error.
>> >> >
>> >> > Also because of this;
>> >> >
>> >> > (II) MACH64(0): <default monitor>: Using hsync range of 30.00-85.00
>> >> > kHz
>> >> > (II) MACH64(0): <default monitor>: Using vrefresh range of
>> >> > 55.00-75.00
>> >> > Hz
>> >> > (II) MACH64(0): <default monitor>: Using maximum pixel clock of
>> >> > 160.00
>> >> > MHz
>> >> >
>> >> >
>> >> > you may need to set the ranges in your xorg.conf instead. check the
>> >> > monitors
>> >> > specs first tho.
>> >>
>> >> What does xrandr -q show?
>> >> --
>> >> Regards,
>> >> Mick
>> >>
>> >
>> > treat log # xrandr -q
>> > Screen 0: minimum 320 x 240, current 1280 x 1024, maximum 1440 x 1024
>> > default connected 1280x1024+0+0 0mm x 0mm
>> >    1280x1024      60.0*
>> >    1440x900       60.0
>> >    1280x960       60.0
>> >    1152x864       75.0
>> >    1024x768       75.0     70.0     60.0
>> >    896x672        60.0
>> >    832x624        75.0
>> >    800x600        75.0     72.0     60.0     56.0     65.0
>> >    700x525        75.0     60.0
>> >    640x512        75.0     60.0
>> >    640x480        75.0     73.0     67.0     60.0
>> >    720x400        70.0
>> >    576x432        75.0
>> >    512x384        75.0     70.0     60.0
>> >    416x312        75.0
>> >    400x300        75.0     72.0     60.0     56.0
>> >    320x240        75.0     73.0     60.0
>> > treat log #
>>
>> Until you can replace the video card, maybe you can come up with a
>> modeline for a lower resolution with 16:9 aspect ratio, such as:
>>
>> 852x480
>> 1280x720
>> 1365x768
>> 1600x900
>>
>> It wouldn't be optimal, but at least it would fill your screen without
>> being stretched strangely.
>>
>
> Yah, I might have some luck with that.  Since I'm years out of practice
> fooling with this stuff (last seen in 2002) can someone point me at the
> tools for
> 1) Computing a modeline (I understand the quality varies a lot)
> 2) Configuring an xorg.conf

Check out x11-apps/amlc -- it has an interactive modeline generator
where you tell it the aspect ratio & size of your screen and it spits
out modelines for you.  You'll still need to fill in the
HSync/VSync/Clock speed stuff.