My machine is an Apple Macbook Air 1,1 from Early 2008, and I'm running Ubuntu 12.04 with kernel Linux 3.2.0-58-generic-pae.
When I connect it to an HD TV via the minidisplayport-DVI (Apple adapter) --> DVI-HDMI (cable) I get the TV recognized in System Settings -> Displays, but the TV only gets a completely black screen signal (i.e. it gets a signal, because if I unplug the cable or disable the TV screen in Ubuntu the TV then says 'no signal', but this signal is just black screen).
The TV is Philips 32pfl4007m/08 but in system settings -> displays it gets named ''philips consumer electronics 58''
The output from xrandr (with cable plugged in) is
Screen 0: minimum 320 x 200, current 3200 x 1080, maximum 8192 x 8192 LVDS1 connected 1280x800+0+12 (normal left inverted right x axis y axis) 286mm x 179mm 1280x800 61.2*+ 1024x768 60.0 800x600 60.3 56.2 640x480 59.9 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 connected 1920x1080+1280+0 (normal left inverted right x axis y axis) 1280mm x 720mm 1920x1080 60.0*+ 50.0 24.0 1600x1200 60.0 1280x1024 60.0 1360x768 59.8 1024x768 60.0 800x600 60.3 640x480 60.0 TV1 unknown connection (normal left inverted right x axis y axis) 848x480 59.9 + 640x480 59.9 + 1024x768 59.9 800x600 59.9
Am I missing some configuration in Ubuntu? or is that a driver problem for the TV or the Apple adapter? Could it be related to Compiz or nvidia drivers?
From Apple page I read
Graphics and video support Intel GMA X3100 graphics processor with 144MB of DDR2 SDRAM shared with main memory
Extended desktop and video mirroring: Simultaneously supports full native resolution on the built-in display and up to 1920 by 1200 pixels on an external display, both at millions of colors
Regarding nvidia drivers since I get
cat /proc/driver/nvidia/version No such file or directory
I believe I'm not using any nvidia drivers.
With lspci I get
Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller
00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 03) (prog-if 00 [VGA controller]) Subsystem: Apple Inc. Device 00a2 Flags: bus master, fast devsel, latency 0, IRQ 42 Memory at 90000000 (64-bit, non-prefetchable) [size=1M] Memory at 80000000 (64-bit, prefetchable) [size=256M] I/O ports at 5110 [size=8] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: intelfb, i915 00:02.1 Display controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (secondary) (rev 03) Subsystem: Apple Inc. Device 00a2 Flags: bus master, fast devsel, latency 0 Memory at 90100000 (64-bit, non-prefetchable) [size=1M] Capabilities: <access denied>
xxx@xxx:~$ sudo lshw -C display *-display:0 description: VGA compatible controller product: Mobile GM965/GL960 Integrated Graphics Controller (primary) vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 03 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:42 memory:90000000-900fffff memory:80000000-8fffffff ioport:5110(size=8) *-display:1 UNCLAIMED description: Display controller product: Mobile GM965/GL960 Integrated Graphics Controller (secondary) vendor: Intel Corporation physical id: 2.1 bus info: pci@0000:00:02.1 version: 03 width: 64 bits clock: 33MHz capabilities: pm bus_master cap_list configuration: latency=0 resources: memory:90100000-901fffff