Page 1 of 1
webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 8:38
by roloz
Hey,
Last Friday I did an update on my RPI and after the update when I try to use the web-interface I only get a black screen.
When I check the RPI it says that Domoticz is running....... How can I solve this problem.
After a day or 2 I made a new SD card with the latest version of Raspian with pixel, installed domoticz, wiringPi and ninjablocks 433MHzUtils.
before rebooting i could see the web-interface, but after restarting I have an black screen again???? (rpi says domoticz is running)
Can I use the Raspian Full version or do I need de Lite version, what can I try to get my screen back.
Thanks a lot.
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 9:02
by Lebo2d9
Did you tried to clear your browser cache?
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 9:09
by roloz
No, didn't do that, but have never done that before.
I will clear the browser cache in firefox. Thanks!
Done, tonight I will try again if I see anything.
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 14:12
by roloz
Well, after a reboot......nothing no connection at all.
I guess something went totally wrong here. I will start all over again.
RPi isn't visible anymore, not via SSH but also not to my router???? but the LAN led are burning
TIPS please, don't know as a starter what is going wrong

And can I use Raspian full version or better use the LITE version
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 21:59
by Lebo2d9
Do you have a wired connection or a wireless connection? I have a RPI3 wireless and after a while he loses his connection but the RPI is still running.
To solve this problem i have a crontab that is pinging to my defgateway every 10 minutes.
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 22:02
by jvdz
Connect the RPI to a screen via hdmi and if there are any errors/messages on the screen after reboot.
Jos
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 22:12
by niceandeasy
Lebo2d9 wrote:Do you have a wired connection or a wireless connection? I have a RPI3 wireless and after a while he loses his connection but the RPI is still running.
To solve this problem i have a crontab that is pinging to my defgateway every 10 minutes.
Somehow, they figured out that the RPI3's WiFi should be in power saving mode, which is, of course, retarded. Google for it and you'll find a command that disables that 'feature', to be executed during boot. Implement that and you'll see that the RPI3's WiFi is much more stable.
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 22:39
by Lebo2d9
This is my iwconfig
- Spoiler: show
- wlan0 IEEE 802.11 ESSID:"koen_lucie_boven"
Mode:Managed Frequency:2.462 GHz Access Point: 68:7F:74:27:2B:8C
Bit Rate=65 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=31/70 Signal level=-79 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:478 Invalid misc:0 Missed beacon:0
Power Management is off
Re: webinterface black screen and nothing to see
Posted: Thursday 04 May 2017 23:17
by niceandeasy
Lebo2d9 wrote:Power Management is off
...indeed but your signal level is very low. I'd consider anything lower than -65dB unreliable.