My Raspberry Pi arrived this week. After creating a boot image on an SD card I had lying around (using the excellent RasPiWrite utility), I initially booted it up on my TV, using the composite video output – all working!
After a little exploration from the command line,
startx brought up the GUI.
As well as the composite video output, the Raspberry Pi supports HDMI. My monitor (a Viewsonic VX2235WM-3) has VGA and DVI inputs, so I ordered the AmazonBasics HDMI to DVI Cable. Connecting up to my monitor, I was disappointed to see no video signal whatsover – the monitor wasn’t seeing the Raspberry Pi at all.
Googling around, I discovered that you can set various configuration options that are read before the Raspberry Pi even boots. With a little experimentation, I found that setting
in config.txt solves the problem – I see video output from the moment I power up the Raspberry Pi! This makes sense – the description of
hdmi_force_hotplug is “Use HDMI mode even if no HDMI monitor is detected” – I’m guessing the cable is not signalling the presence of a monitor to the Raspberry Pi, so it decides that it doesn’t need to send HDMI output.
Watch this space for more Raspberry Pi fun!