Monitor will only detect PI powered up in Safe Mode (solved)
Posted: Sun Jan 13, 2013 11:23 am
Hi, I wonder if anyone else gets this problem:
Received my PI just before Xmas and am running the beginners Rasbian Wheezy version and want to connect it to a monitor I have (it's an LG StudioWorks 570LS) which only has a VGA connector. So I bought myself an HDMI to VGA adapter off Amazon (sold by Ceed and described as "HDMI TO VGA Cable Adapter for PC Laptop Power-Free, Raspberry Pi, MHL support ") and connected ieverything together. Upon booting the PI the monitor stayed firmly in Power Saving Mode so, after checking the adapter was not DOA (by connecting it to a laptop I have, all OK) I uncommented hdmi_safe=1 in config.txt and restarted the PI.
So far so good, the monitor detects the PI and I boot up in safe mode. Of course now I have the desktop in safe mode which is a bit ugly of course and doesn't use all the screen either. So I go back to config.txt, comment out hdmi_safe=1 and then set:
hdmi_drive=2
hdmi_group=2
hdmi_mode=19
(the last is for 1024x768 @ 85Hz and these settings I took from the OSD on the monitor when connected to the laptop so I would be sure they were valid)
I Reboot the PI and everything is fine, the monitor works and I have a desktop that is a nicely usable size and fills the screen.
Everything is OK until I power off the PI. When I power it back up the monitor stays stubbornly in Power Saving Mode and will not acknowledge the PI. I have tried the basics of unplugging the adapter, switching the monitor on and off etc. but no good. I have to go back to setting safe mode in config.txt again and then repeating what I did before.
Does anyone know of another setting (other than safe mode) I can use to convince my monitor to detect the PI? Or is there any way of changing the screen settings dynamically after boot?
Thanks...
Received my PI just before Xmas and am running the beginners Rasbian Wheezy version and want to connect it to a monitor I have (it's an LG StudioWorks 570LS) which only has a VGA connector. So I bought myself an HDMI to VGA adapter off Amazon (sold by Ceed and described as "HDMI TO VGA Cable Adapter for PC Laptop Power-Free, Raspberry Pi, MHL support ") and connected ieverything together. Upon booting the PI the monitor stayed firmly in Power Saving Mode so, after checking the adapter was not DOA (by connecting it to a laptop I have, all OK) I uncommented hdmi_safe=1 in config.txt and restarted the PI.
So far so good, the monitor detects the PI and I boot up in safe mode. Of course now I have the desktop in safe mode which is a bit ugly of course and doesn't use all the screen either. So I go back to config.txt, comment out hdmi_safe=1 and then set:
hdmi_drive=2
hdmi_group=2
hdmi_mode=19
(the last is for 1024x768 @ 85Hz and these settings I took from the OSD on the monitor when connected to the laptop so I would be sure they were valid)
I Reboot the PI and everything is fine, the monitor works and I have a desktop that is a nicely usable size and fills the screen.
Everything is OK until I power off the PI. When I power it back up the monitor stays stubbornly in Power Saving Mode and will not acknowledge the PI. I have tried the basics of unplugging the adapter, switching the monitor on and off etc. but no good. I have to go back to setting safe mode in config.txt again and then repeating what I did before.
Does anyone know of another setting (other than safe mode) I can use to convince my monitor to detect the PI? Or is there any way of changing the screen settings dynamically after boot?
Thanks...