Debian on Pinebook Pro
#1
What is the state of USB Type C DiplayPort out on Debian 12 for the Pinebook Pro?  It seems like all the required kernel modules are loading, but it doesn't work.  Is this a Debian 12 kernel issue or a U-Boot Issue?
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#2
Do you have `firmware-misc-nonfree` installed?
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#3
Yes.
firmware-misc-nonfree is already the newest version (20230210-5).
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#4
If you run `dmidecode`, does it tell you what u-boot version you're using?
Can you try a Stable-backports kernel and see if that changes/improves the situation (currently version 6.6.13-1~bpo12+1) ?
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#5
# dmidecode 3.4
# No SMBIOS nor DMI entry point found, sorry

$ uname -r
Linux PinebookPro 6.1.0-18-arm64 #1 SMP Debian 6.1.76-1 ( 2024-02-01) aarch64 GNU/Linux

Is the correct backport repo "http://deb.debian.org/debian bookworm-backports main contrib non-free non-free-firmware" ?
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#6
"typec_displayport" is the correct Linux kernel module to have loaded?
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#7
(03-22-2024, 09:46 AM)u974615 Wrote: # dmidecode 3.4
# No SMBIOS nor DMI entry point found, sorry

Bummer

Quote:$ uname -r
Linux PinebookPro 6.1.0-18-arm #1 SMP Debian 6.1.76-1 ( 2024-02-01) aarch64 GNU/Linux

Are you sure that isn't 6.1.0-18-arm64? Note the arm64 part.

Quote:Is the correct backport repo "http://deb.debian.org/debian main contrib non-free non-free-firmware" ?

No, that's the normal repo. For backports see here: https://backports.debian.org/Instructions/

(03-22-2024, 10:58 AM)u974615 Wrote: "typec_displayport" is the correct Linux kernel module to have loaded?

I think so, but I don't know.
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#8
USB Type C Alternate Mode DisplayPort out on the PineBook Pro doesn't even work with the PINE64 Dock.

I gather that USB Type C Alternate Mode Displayport out is no longer supported in Debian Workstation 12 aarch64, at least for the PineBook Pro.

I imagine the backstory as to why it was demonstrated to work and why it doesn't now would be intriguing. Of course the demos I saw were for Manjaro and not Debian and wasn't using Tow-Boot.

I can see that this is a difficult feature to do. Google can't even get it to work on the Pixel Phone and Pixel Tablet. Whereas Samsung Galaxy phones have had it for years.
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