Unstable HDMI out
#7
My current experience:

Device shipped in August 2021 from EU warehouse, so probably 1.2b, but I haven't removed the screwed-on part to look at the board.

[My practical HDMI use is either HDMI-to-PC,VGA-to-monitor adapter, or HDMI-capture USB quasi-webcam stick; I can go to an HDMI projector at work, though]

With Mobian: 5.10 kernel, August build, workaround with force-on (and EDID) does not usefully work at least with the adapter, but after some of the experiments on shutdown I see a half of mobian logo on the external screen (so presumably the hardware is in good enough shape)…

postmarketOS 5.14.6: also could not get things to work.

Downloaded binary 5.15 Linux kernel build from megous, it seems to be 5.15.0, convinced pmOS to make initramfs for it then gunzip'ped the initramfs because the kernel complained otherwise. Now uname is showing 5.15.0 built on October 31, things like WiFi work, so I assume forced-update went well.

All three of HDMI-adapter, HDMI-capture, and native-HDMI result in roughly the same situation. Three different docks tried with native-HDMI, one of them PinePhone dock. Both dock powered and unpowered, both connect-dock-then-HDMI and connect-dock-with-HDMI attempted. The connection does not get recognised by the other side, PinePhone does not seem to think something has been connected, in dmesg I see:

Code:
sun8i-dw-hdmi 1ee0000.hdmi: EVENT=plugin
sun8i-dw-hdmi 1ee0000.hdmi: EVENT=plugout
anx7688 1-0028: DP state changed to 0x0302

At home I tried the forced-on workaround with adapter, does not work with the new kernel either.
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Messages In This Thread
Unstable HDMI out - by james8880 - 09-27-2021, 10:59 AM
RE: Unstable HDMI out - by nelstomlinson - 09-27-2021, 12:46 PM
RE: Unstable HDMI out - by smufu - 10-06-2021, 01:54 AM
RE: Unstable HDMI out - by beta-user - 10-27-2021, 11:31 AM
RE: Unstable HDMI out - by smufu - 11-02-2021, 02:49 PM
RE: Unstable HDMI out - by tllim - 11-02-2021, 08:05 PM
RE: Unstable HDMI out - by zltpxqhp69o2 - 11-22-2021, 11:31 AM

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