1680x1050 screen resolution problem with X

raymano · 2007-06-21 14:37:43

I have a new acer AL2016W widescreen LCD monitor and an intel 945 graphics chip. The correct resolution of the screen for this monitor is 1680x1050. But I can only get it to work at 1280x1024 resolution which is not the correct aspect ratio for this monitor and doesn't look good.

When I try the 1680x1050 resolution in xorg.conf X starts fine but the monitor goes blank and displays a floating window saying "Input not supported". A ps from a tty terminal shows X is running.

I'd appreciate a working xorg.conf or any pointers on how to fix this.

Thanks!

triplefault · 2007-06-21 14:51:19

Hi

take a look at this .. http://wiki.archlinux.org/index.php/Int … Resolution. This might help you

triplefault

PS 915resolution is in AUR

Last edited by triplefault (2007-06-21 14:54:43)

raymano · 2007-06-21 15:19:19

Thanks but it doesn't help. I know about 915resolution which is in the community repo (no need to build from AUR). 915resolution -l does not list 1680x1050 resolution as an option.

Still no success

Last edited by raymano (2007-06-21 15:20:36)

bt · 2007-06-21 20:54:44

I have a Dell 20 inch widescreen, purchased about 18 months ago. It has been recognized automatically by archOS and FaunOS. I will post my modeline for my monitor,but I am not sure it will be correct for yours. As a start here is what I have:

ModeLine "1680x1050" 146.25 1680 1960 2136 2240 1050 1080 1086 1089

I have absolutely no idea if the above information has any value.

cornjump · 2007-06-21 21:44:40

Hi

I had the same probleme with the same king of screen (AL2216W) using 1680x1050 resolution.

The only solution i found was to comment the horizontal sync and vertrefresh lignes in xorg.conf.
Xorg determine itself the resolution and frequency to use and my problem disappear.

Then i look what frequency xorg was using and i entered them in xorg.conf.

Hope it will help

triplefault · 2007-06-22 07:09:49

raymano wrote:

915resolution -l does not list 1680x1050 resolution as an option.
Still no success

I've got an 945Gm based notebook which is running at 1920 × 1200 resolution
I can't remember if "915resolution -l" listed this resolution at first, but I will check when I get home (still boring work to do ). The only thing I know for sure is that I use 915resolution to get there
Stay tuned

raymano · 2007-06-22 19:50:37

bt wrote:

I have a Dell 20 inch widescreen, purchased about 18 months ago. It has been recognized automatically by archOS and FaunOS. I will post my modeline for my monitor,but I am not sure it will be correct for yours. As a start here is what I have:
ModeLine "1680x1050" 146.25 1680 1960 2136 2240 1050 1080 1086 1089
I have absolutely no idea if the above information has any value.

Do you happen to know where these numbers come from and how I can find out what they are for my monitor?

I've seen this solution in my google searches but the numbers don't seem to work for my monitor.

Last edited by raymano (2007-06-22 19:52:47)

iBertus · 2007-06-22 20:15:48

The numbers for the mode line are probably generated by using the gtf utility. It uses a standard formula to calculate various timings from the resolution and refresh rate.

triplefault · 2007-06-26 20:44:07

Sorry that it took so long,here is what I did.
I'm using 1920x1200 but it should work with other resolutions

# 915resolution -l

Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 945GM
BIOS: TYPE 1
Mode Table Offset: $C0000 + $269
Mode Table Entries: 36

Mode 30 : 640x480, 8 bits/pixel
Mode 32 : 800x600, 8 bits/pixel
Mode 34 : 1024x768, 8 bits/pixel
Mode 38 : 1280x1024, 8 bits/pixel
Mode 3a : 1600x1200, 8 bits/pixel
Mode 3c : 1920x1440, 8 bits/pixel
Mode 41 : 640x480, 16 bits/pixel
Mode 43 : 800x600, 16 bits/pixel
Mode 45 : 1024x768, 16 bits/pixel
Mode 49 : 1280x1024, 16 bits/pixel
Mode 4b : 1600x1200, 16 bits/pixel
Mode 4d : 1920x1440, 16 bits/pixel
Mode 50 : 640x480, 32 bits/pixel
Mode 52 : 800x600, 32 bits/pixel
Mode 54 : 1024x768, 32 bits/pixel
Mode 58 : 1280x1024, 32 bits/pixel
Mode 5a : 1600x1200, 32 bits/pixel
Mode 5c : 1920x1440, 32 bits/pixel
Intel 800/900 Series VBIOS Hack : version 0.5.2

then I patch the Bios Data with

# 915resolution 58 1920 1200

Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 945GM
BIOS: TYPE 1
Mode Table Offset: $C0000 + $269
Mode Table Entries: 36

alter this 915resolution -l says

Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 945GM
BIOS: TYPE 1
Mode Table Offset: $C0000 + $269
Mode Table Entries: 36

Mode 30 : 640x480, 8 bits/pixel
Mode 32 : 800x600, 8 bits/pixel
Mode 34 : 1024x768, 8 bits/pixel
Mode 38 : 1920x1200, 8 bits/pixel
Mode 3a : 1600x1200, 8 bits/pixel
Mode 3c : 1920x1440, 8 bits/pixel
Mode 41 : 640x480, 16 bits/pixel
Mode 43 : 800x600, 16 bits/pixel
Mode 45 : 1024x768, 16 bits/pixel
Mode 49 : 1920x1200, 16 bits/pixel
Mode 4b : 1600x1200, 16 bits/pixel
Mode 4d : 1920x1440, 16 bits/pixel
Mode 50 : 640x480, 32 bits/pixel
Mode 52 : 800x600, 32 bits/pixel
Mode 54 : 1024x768, 32 bits/pixel
Mode 58 : 1920x1200, 32 bits/pixel   <== heres the patch
Mode 5a : 1600x1200, 32 bits/pixel
Mode 5c : 1920x1440, 32 bits/pixel

here is the screen section from xorg.conf

Section "Screen"
    Identifier "Screen0"
    Device     "Card0"
    Monitor    "Monitor0"
    DefaultColorDepth 24 
    SubSection "Display"
        Depth     24 
        Modes "1280x1024" 
    EndSubSection
EndSection

Arch Linux

#1 2007-06-21 14:37:43

1680x1050 screen resolution problem with X

#2 2007-06-21 14:51:19

Re: 1680x1050 screen resolution problem with X

#3 2007-06-21 15:19:19

Re: 1680x1050 screen resolution problem with X

#4 2007-06-21 20:54:44

Re: 1680x1050 screen resolution problem with X

#5 2007-06-21 21:44:40

Re: 1680x1050 screen resolution problem with X

#6 2007-06-22 07:09:49

Re: 1680x1050 screen resolution problem with X

#7 2007-06-22 19:50:37

Re: 1680x1050 screen resolution problem with X

#8 2007-06-22 20:15:48

Re: 1680x1050 screen resolution problem with X

#9 2007-06-26 20:44:07

Re: 1680x1050 screen resolution problem with X

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