Hi!

How do I set the resolution at 1280x800 (16/10) on a VESA based, i915 chipset Acer laptop?

I compiled Linux 2.6.10 with the i915 driver.

Rgs,

JL

Seems to me that you may have to calculate a modeline for your display and a site similar to this one could help. I had to do some of this on my HP Z%5000 laptop with 1600x1050 resolution. http://koala.ilog.fr/cgi-bin/nph-colas-modelines I am not sure this is the site I used, and I also consulted various other laptop web articles out there to help me get my video going. I'm not so sure this will be a big helpful answer for you... Might steer you in some direction.

Tks
I did it actually using the same thread.
==================================================
Section "Monitor"

Identifier "dddddddddddd"

# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

HorizSync 31.5 - 79.0

# HorizSync 30-64 # multisync
# HorizSync 31.5, 35.2 # multiple fixed sync frequencies
# HorizSync 15-25, 30-50 # multiple ranges of sync frequencies

# VertRefresh is in Hz unless units are specified.
# VertRefresh may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.

VertRefresh 40-150
ModeLine "1280x800" 172.73 1280 1336 1616 1728 800 802 814 840 #119Hz

EndSection
===============================================

What I get is this (extract from the /var/log/Xorg.0.log file):
=======================================
II) VESA(0): Gamma: 2.20
(II) VESA(0): No DPMS capabilities specified; RGB/Color Display
(II) VESA(0): First detailed timing is preferred mode
(II) VESA(0): redX: 0.575 redY: 0.359 greenX: 0.319 greenY: 0.532
(II) VESA(0): blueX: 0.155 blueY: 0.129 whiteX: 0.312 whiteY: 0.328
(II) VESA(0): Manufacturer's mask: 0
(II) VESA(0): Supported additional Video Mode:
(II) VESA(0): clock: 68.9 MHz Image Size: 331 x 207 mm
(II) VESA(0): h_active: 1280 h_sync: 1301 h_sync_end 1333 h_blank_end 1408 h_border: 0
(II) VESA(0): v_active: 800 v_sync: 804 v_sync_end 808 v_blanking: 816 v_border: 0
(II) VESA(0): QUANTADISPLAY
(II) VESA(0): QD15TL022
(II) VESA(0): Searching for matching VESA mode(s):
Mode: 160 (0x0)
=======================================================
Then it can't find it:
=======================================================
(II) VESA(0): Total Memory: 123 64KB banks (7872kB)
(WW) VESA(0): config file hsync range 31.5-79kHz not within DDC hsync ranges.
(WW) VESA(0): config file vrefresh range 40-150Hz not within DDC vrefresh ranges.
(II) VESA(0): dddddddddddd: Using hsync range of 31.50-79.00 kHz
(II) VESA(0): dddddddddddd: Using vrefresh range of 40.00-150.00 Hz
(II) VESA(0): Not using mode "1280x800" (no mode of this name)<<<<<<<<<<<<<<<
(--) VESA(0): Virtual size is 1024x768 (pitch 1024)
(**) VESA(0): *Built-in mode "1024x768"
(**) VESA(0): *Built-in mode "800x600"
(**) VESA(0): *Built-in mode "640x480"
(--) VESA(0): Display dimensions: (330, 210) mm
(--) VESA(0): DPI set to (78, 92)
(II) VESA(0): Attempting to use 85Hz refresh for mode "1024x768" (118)
(II) VESA(0): Attempting to use 85Hz refresh for mode "800x600" (115)
(II) VESA(0): Attempting to use 85Hz refresh for mode "640x480" (112)
(**) VESA(0): Using "Shadow Framebuffer"
(II) Loading sub module "shadow"
====================================================
How come I get the message "no mode of this name"?

JL

Solved!

Thanks to this link:

http://perso.wanadoo.fr/apoirier/

setting the 1280x800, 16/10 res on an Acer Aspire 1690 WLMi is a breeze

The program worked great on my Acer Aspire 1642 WLMi running Mandriva 2006, which has a native resolution of 1280X800. I've been searching for this fix for weeks!

I'm a bit of a novice linux user, so excuse my ignorance with these concerns:

1.Why do I lose this screen size/resolution match every time I reboot? In other words, the screen is "too big" for the monitor upon rebooting, just like it was before I found this fix.
2.The follow up is of course this: how can I keep these settings upon rebooting? If I have to run this program every time at reboot, how do I set this up?

Many thanks,
Mark

In any Linux distro there's a file that executes custom commands and scripts at boot time.
In Slackware, that file is:
/etc/rc.d/rc.local
If you put:
=============================================
# To change the resolution to 1280x800
855resolution 3c 1280 800
=============================================
in it, it'll execute that command everytime Linux boots.
Therefore afterwards your resolution will always be set at 1280x800.

Thank you very much. Mandriva had that rc.local file waiting there for me to edit.

You've made my weekend.