Tried and as before it stuck at 75Hz resulting in 1280x1024. Some time 
ago I've somewhere read that on linux with Xorg 7.2 someone also had 
this problem (I don't know if I can call it "same problem", it has 
widescreen LCD, i810 driver) and solved it by updating i810 driver, 
xrandr to 1.2 and some other libs from Xorg's git tree. Because 7.3 is 
already released and Matthieu Herrb is doing his hard work to move 
xenocara to 7.3 I guess that in near future I also will be pleased with 
1680x1050 :)

Marius ROMAN wrote:
quoted text
> Like Darrin suggested try matching Modelines and Modes :
> 
> On xorg.conf
> 
> Enable only this  (comment the rest of the modellines) :
> Modeline "1680x1050_60.00"  147.14  1680 1784 1968 2256  1050 1051
> 1054 1087  -HSync +Vsync
> 
> Modify the screen section :
> 
> Section "Screen"
>         Identifier "Screen0"
>         Device     "Card0"
>         Monitor    "Monitor0"
>         DefaultDepth 24
>         SubSection "Display"
>                 Depth   24
>                 Modes   "1680x1050_60.00"
>         EndSubSection
> EndSection
> 
> Marius
> 
> On 9/21/07, Genadijus Paleckis <lsd@nnt.lt> wrote:
>> I have similar problem and it is still unresolved. My video card Intel
>> i810 and monitor is Samsung SyncMaster 226CW, I'm trying to use
>> 1680x1050 with no success. What I found is that I cannot force to use
>> 60Hz vertrefresh and card uses 75Hz instead.
>>
>> gtf's suggestion
>> boo$ gtf 1680 1050 60
>>
>>    # 1680x1050 @ 60.00 Hz (GTF) hsync: 65.22 kHz; pclk: 147.14 MHz
>>    Modeline "1680x1050_60.00"  147.14  1680 1784 1968 2256  1050 1051
>> 1054 1087  -HSync +Vsync
>>
>> xorg.conf's monitor and screen sections:
>>
>> Section "Monitor"
>>          Identifier   "Monitor0"
>>          Option       "DPMS"
>>
>>         # from Xorg.0.log
>>          HorizSync    30-81
>>          VertRefresh  56-75
>>
>>         # GTF suggestion
>>         Modeline "1680x1050_1"  147.14  1680 1784 1968 2256  1050 1051 1054
>> 1087  -HSync +Vsync
>>
>>         # numbers from Xorg.0.log
>>         ModeLine "1680x1050_2"  119.0   1680 1728 1760 1840  1050 1053 1059 1080
>> EndSection
>>
>> Section "Screen"
>>          Identifier "Screen0"
>>          Device     "Card0"
>>          Monitor    "Monitor0"
>>          DefaultDepth 24
>>          SubSection "Display"
>>                  Depth   24
>>                  Modes   "1680x1050_1" "1680x1050_2"
>>          EndSubSection
>> EndSection