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by Coco l'asticot
Mon Dec 09, 2019 3:03 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

After changing the micro-SD card for a new card with a fresh Raspbian installed on it, there isn't better news. :cry: The splash screen / tty console still display correctly on the LCD screen (it is btw recognized by the tvservice command), LXDE even does work with an HDMI screen connected. But, sti...
by Coco l'asticot
Sun Dec 08, 2019 7:47 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

Thank you, I tried with your parameters but unfortunately it changes nothing (and I need the "ignore_lcd=0" option to enable the display at boot). Forwarding X11 through SSH works (I can run leafpad remotely for example), so I think the X setup is working correctly. I can see the console and the spl...
by Coco l'asticot
Fri Dec 06, 2019 9:52 am
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

/boot/cmdline.txt content: dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1 root=PARTUUID=686ad6a5-02 rootfstype=ext4 elevator=deadline fsck.repair=yes rootwait And I said earlier that my file /boot/config.txt was not modified except for the "ignore_lcd" and "dtparam=audio" options, so I gue...
by Coco l'asticot
Thu Dec 05, 2019 5:01 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

If you've used an ancient historic tutorial, then pull off the green and yellow wires. The official display only needs power and the ribbon cable on modern (2014 onwards, 40-pin) Raspberries. I haven't a "modern" Raspberry, since it's a Model B Rev 2.0. So I followed the legacy instructions and thi...
by Coco l'asticot
Thu Dec 05, 2019 2:04 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

Sorry, I'd forgot you were using an LCD display (not using HDMI). In that situation the tvservice command is not that helpful as can be seen even when used with the official display**: I don't understand… I am using the official display (or at least a very similar model looking exactly the same as ...
by Coco l'asticot
Wed Dec 04, 2019 10:25 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

O.K. In your O.P. you did mention you can connect via SSH etc. Can you post the output of these tvservice commands please? Here there are: $ tvservice -n device_name=Ras-LCD Panel $ tvservice -m DMT Group DMT has 0 modes: $ tvservice -m CEA Group CEA has 0 modes: $ tvservice -s state 0x400000 [LCD]...
by Coco l'asticot
Tue Dec 03, 2019 2:41 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

Re: No X display (black screen) after boot.

There's no guarantee that a device having more than one USB port can supply N x 1 port's current limit from N ports. I didn't know that, thank you. I am now testing it with a 5.2V x 2.4A alimentation adapter, the Wifi dongle and the screen are activated, but no more X display. About the lack of fre...
by Coco l'asticot
Mon Dec 02, 2019 1:21 pm
Forum: Troubleshooting
Topic: No X11 (black screen) when using LCD display.
Replies: 15
Views: 819

No X11 (black screen) when using LCD display.

I have a Rapsberry Pi model B rev 2.0, with Raspbian GNU/Linux 10 (buster), running Linux 4.19.85+. I put a LCD 7" touchscreen on it, and the display is working (after having done the trick explained here ). At least in text mode. The whole is powered with two USB cables plugged on my workstation US...

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