Xorg - Resolution issues

[Francis Dubé]

Martin Turgeon a écrit :
> Francis Dubé a écrit :
>> Francis Dubé wrote :
>>> Hi everyone,
>>>
>>> I got this TV : 
>>> http://www.samsung.com/ca/consumer/detail/spec.do?group=tv&type=tv&subtype=lcd&model_cd=LN40A330J1DXZC&fullspec=F 
>>>
>>>
>>> I'm trying to use it as my screen under FreeBSD 7.1-RELEASE with a 
>>> resolution of 1366x768 which is suposed to be suported by the TV, 
>>> acording with the TV's specs. I did the same with another very 
>>> similar TV and it was working #1 without having to create any 
>>> Xorg.conf, a plain startx and the display was perfect (1366x768).
>>>
>>> With my new TV, X only start in 1280x720. So I created a config file 
>>> with Xorg -configure, then I tried to force Xorg to use 1366x768 but 
>>> it keeps loading in 1280x720. In my Xorg.0.log it looks like there's 
>>> no support for the resolution I want :
>>>
>>> [...]
>>> (==) Using config file: "/etc/X11/xorg.conf"
>>> [...]
>>> (II) RADEON(0): Panel infos found from DDC detailed: 1280x720
>>> [...]
>>> (II) RADEON(0): Supported additional Video Mode:
>>> (II) RADEON(0): clock: 74.2 MHz   Image Size:  160 x 90 mm
>>> (II) RADEON(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 
>>> h_blank_end 1650 h_border: 0
>>> (II) RADEON(0): v_active: 720  v_sync: 725  v_sync_end 730 
>>> v_blanking: 750 v_border: 0
>>> (II) RADEON(0): Supported additional Video Mode:
>>> (II) RADEON(0): clock: 74.2 MHz   Image Size:  160 x 90 mm
>>> (II) RADEON(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 
>>> h_blank_end 2200 h_border: 0
>>> (II) RADEON(0): v_active: 540  v_sync: 542  v_sync_end 547 
>>> v_blanking: 562 v_border: 0
>>> (II) RADEON(0): Ranges: V min: 23  V max: 61 Hz, H min: 26  H max: 
>>> 68 kHz, PixClock max 150 MHz
>>> (II) RADEON(0): Monitor name: SAMSUNG
>>> [...]
>>> (II) RADEON(0): Output DVI-0 using initial mode 1280x720
>>> [...]
>>>
>>> This is how i configured my resolution in my /etc/X11/xorg.conf :
>>> [...]
>>> Section "Screen"
>>>        Identifier "Screen0"
>>>        Device     "Card0"
>>>        Monitor    "Monitor0"
>>>        DefaultDepth 24
>>>        SubSection "Display"
>>>                Viewport   0 0
>>>                Depth     24
>>>                Modes   "1366x768"
>>>        EndSubSection
>>> EndSection
>>> [...]
>>>
>>> My video card is a Radeon HD 3450 and my Xorg version is xorg-7.3_2
>>>
>>> Also, the only other resolution "supported" by the TV according to 
>>> the log file would be 1920x540...but it's not supported by the TV !
>>>
>>> Am I missing something ?
>>>
>>> Thanks for reading.
>>>
>>> Francis
>>> _______________________________________________
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>> I had this problem last month, I tought it was fixed using this 
>> little trick suggested by Polytropon :
>>
>> Polytropon wrote :
>>> If it doesn't work, there's always an option to use xrandr via
>>> ~/.xinitrc:
>>>
>>>     xrandr --size 1366x768 &
>>>     xrandr --fb 1366x768 &
>>>
>>> I have a similar issue with the "ati" driver, using an ATI Radeon 9200
>>> (RV250) which I need to force to 1400x1050 (worked with old XFree86
>>> and the setting in the config file, as you mentioned it). The
>>> autodetection of the screen (21" CRT) leads to stupid values that
>>> are completely unusable.
>> The screen is located far from my office so I can't be in front of it 
>> to test, that's why I haven't spotted it wasn't working. I tought it 
>> was because when i take a screenshot with 'scrot' i get a full 
>> screenshot in 1366x768 and everything is clean, but the TV itself 
>> shows a 1280x720 display. I should've watched the Xorg's log instead 
>> of simply assuming it was working with a screenshot, but anyway now 
>> my problem is the same : The PC is configured in 1366x768, but the TV 
>> don't care and shows a 1280x720.
>>
>> Anyone got a similar issue and a way to fix it ?
>>
>> Thanks,
>>
>> Francis Dubé
>
> Hi!
>
> I have the same problem with the same model of TV (Samsung A330). Did 
> you solved your problem?
>
> Thanks,
>
> Martin
>
No I haven't solved my problem yet. Still trying to figure out why my TV 
display is in 1280x720. When I take a screenshot with 'scrot' i get a 
file like this : 2009-03-18-104527_1360x768_scrot.png. But in the 
Xorg.0.log it clearly shows the resolution of the TV itself :

term004# cat /var/log/Xorg.0.log | grep 1360
term004# cat /var/log/Xorg.0.log | grep 1280
(II) RADEON(0): Panel infos found from DDC detailed: 1280x720
(II) RADEON(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 
h_blank_end 1650 h_border: 0
(II) RADEON(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 
h_blank_end 1650 h_border: 0
(II) RADEON(0): Output DVI-0 using initial mode 1280x720
Mode 1280x720 - 1650 750 5
Mode 1280x720 - 1650 750 5
(II) RADEON(0): Modeline "1280x720"x0.0   74.25  1280 1390 1430 1650  
720 725 730 750 +hsync +vsync (45.0 kHz)
(II) RADEON(0): h_active: 1280  h_sync: 1390  h_sync_end 1430 
h_blank_end 1650 h_border: 0

I tried 'xrandr'  in my .xinitrc file, which only affect my 
screenshots... I also tried Prefered Mode in the Xorg conf, no effects. 
Any tips would be very appreciated ! Thanks.

Francis Dubé