GPIO madness.
-
@jwz
I think there are HDMI deadplugs. Stupid solution, but maybe the easiest.@neopostmodern I have used those for other purposes but of course they're full-sized HDMI so now I have to have one at the end of a dangling cable too, which is a pain in the ass.
-
Let's try a different question: How do I make a Pi4b Debian 12.11 believe that an HDMI monitor is connected even if one is not?
The fact that things continue working *after I have unplugged the monitor* makes me think that this some kernel initialization or dependency nonsense and perhaps there's some modprobe that could fix it, but I didn't see a smoking gun in lsmod.
-
Let's try a different question: How do I make a Pi4b Debian 12.11 believe that an HDMI monitor is connected even if one is not?
-
Let's try a different question: How do I make a Pi4b Debian 12.11 believe that an HDMI monitor is connected even if one is not?
@jwz@mastodon.social There is fake monitor dongle that you can buy for a few dollars from China.
Example (untested): https://www.aliexpress.com/item/1005007634237816.html -
@jwz@mastodon.social There is fake monitor dongle that you can buy for a few dollars from China.
Example (untested): https://www.aliexpress.com/item/1005007634237816.htmlHEY EVERYBODY I HAVE BEEN INFORMED THAT FAKE HDID DONGLES EXIST. SIX TIMES.
-
HEY EVERYBODY I HAVE BEEN INFORMED THAT FAKE HDID DONGLES EXIST. SIX TIMES.
@jwz@mastodon.social And I can't see any of the other posts about fake HDMI dongles. The wonders of federated network in action
-
@jwz@mastodon.social And I can't see any of the other posts about fake HDMI dongles. The wonders of federated network in action
@bunny Wasn't "Fetch All Replies" supposed to have fixed that last year? https://blog.joinmastodon.org/2025/10/mastodon-4-5-for-devs/
-
@bunny Wasn't "Fetch All Replies" supposed to have fixed that last year? https://blog.joinmastodon.org/2025/10/mastodon-4-5-for-devs/
@jwz@mastodon.social For people that use Mastodon I suppose
-
-
GPIO madness.
Dear Lazyweb, riddle me this:
1. Boot Pi with HDMI monitor attached: works fine.
2. Boot without monitor: all GPIO inputs "flap" about once a second.
3. Plug in monitor: 10 seconds later, inputs start behaving normally.
4. Unplug monitor: remains good. Until reboot.WTF?
Raspberry Pi 4 Model B Rev 1.5, Debian GNU/Linux 12 (bookworm) 12.11. Two different Pis, same behavior.
https://jwz.org/b/yk2FUPDATE: I have now been informed *NINE TIMES* that HDID dongles exist by people who don't read the replies before commenting with the first thing that popped into their head, don't have an answer to my actual question, but think they know how to Google.
I am blocking every single one of you.
Don't be that guy.