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External Monitor on a MacBook: Cannot use native resolution

Archived thread 391047 from Apple Intel Users. Markdown source: Apple_Intel_Users/thread_391047_External_Monitor_on_a_MacBook_Cannot_use_native_re.md

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#1

Hi everyone,

today I bought a Siemens Fujitsu Scaleoview L22-1W which uses a native resolution of 1680x1050. h-freq 30-82 refresh rate 50 75 maximum pixel rate 150MHZ

So far I got cloning and everything else to work, like I wanted. Expect that I cannot run the external monitor with the resolution if 1680x1050. I have tried a lot of things: several different modlines....

But nothing helps, currently it runs on 1280x800 which sucks on a 22'' monitor.

I have attached my xorg.conf and my xorg.log. Maybe somebdoy knows where the problem is.

Thanks a lot for any support. The birthday kid wants to play with his present :( http://batland,de/xorg.conf http://batland.de/Xorg.0.log Bye, Mips

#2

From the log:


(WW) I810(0): config file hsync range 28-64kHz not within DDC hsync range 30-82kHz
(WW) I810(0): config file vrefresh range 43-60Hz not within DDC vrefresh range 56-76Hz

Maybe this is the issue? It looks like your two Monitors are getting crossed in the config somehow.

#3

Mipsel said:

currently it runs on 1280x800 which sucks on a 22'' monitor.

I have attached my xorg.conf and my xorg.log. Maybe somebdoy knows where the problem is.

Possibly here in the log:

) Primary Device is: PCI 00:02:0

(WW) I810: No matching Device section for instance (BusID PCI:0:2:1) found

X found 2 devices but xorg.conf has nothing for BusID PCI:0:2:1

xorg.conf has both BusID same:

Section "Device"

Identifier "Intel Corporation Mobile Integrated Graphics Controller" Driver "i810" Screen 0 BusID "PCI:0:2:0" Option "MonitorLayout" "CRT,LFP" Option "XAANoOffscreenPixmaps" EndSection

Section "Device" Identifier "Intel" Screen 1 Driver "i810" Option "MonitorLayout" "CRT,LFP" BusID "PCI:0:2:0" EndSection

Change one of them to BusID PCI:0:2:1 Then X will recognise both and the ModeLine should be unnecessary.

the log again:

(II) I810(0): Supported additional Video Mode:

(II) I810(0): clock: 146.2 MHz Image Size: 474 x 296 mm (II) I810(0): h_active: 1680 h_sync: 1784 h_sync_end 1960 h_blank_end 2240 h_border: 0 (II) I810(0): v_active: 1050 v_sync: 1053 v_sync_end 1059 v_blanking: 1089 v_border: 0 (II) I810(0): Ranges: V min: 56 V max: 76 Hz, H min: 30 H max: 82 kHz, PixClock max 150 MHz (II) I810(0): Monitor name: L22-1W (II) I810(0): Serial No: YEQX011703

Xorg has a mode for 1680x1050. ==========

#4

I'm fairly sure you're right in have the PCI Bus ID to be the same, it is in my config file.

You may want to look at the results of ddsinfo/ddcinfo/ddsprobe/ddcprobe (it's one of them..type dd and press tab a lot) This shows the information from the monitor.

Also try turning clone off. Clone may be getting confused over 2 different monitors resolutions.