Replies: 13 comments
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For what it's worth, I was able to dump the MX25L2006E with a test clip. |
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What's the full output from |
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I do not see a mention of 1AF80175 in the output. fwupdtool output |
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More output from i2cdetect: |
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Ahh, so the PS175 isn't on your mainboard? Can you help me a bit with the logical and electrical topology? |
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Based on a program called ddccontrol (gddccontrol) it seems the two displayport outputs are at i2c-4 and i2c-5. Only when I have an HDMI cable plugged in do I get this output with i2cdetect -y 6 The Elitedesk 800 G3 has options boards for either outputting VGA, Displayport, or HDMI for one of the back panel output spaces. Two other displayports are permanently connected to the mainboard. A board to board connector is used to mount the option board to the mainboard with two screws. The option board for the HDMI contains a PS175 and programmable flash memory. I can trace the board connector electrically if that helps, it would just help me if I knew what I was looking for. I am not sure how a GUID is generated. |
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I guess you could try using i2c-6 in the quirk file, but more normally ACPI is involved to give it a well known name. Usually the i2c interface is actually different to the DDC one. Do you have any contact with HP for this hardware? I could ask Parade, but they're probably not going to be able to say anything without the approval of the ODM or OEM. The other thing to try is to find a [working] firmware update program for the PS175 in the Elitedesk and then strace what it's doing, or the equivalent for a win32 binary. |
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I tried poking around at ACPI dumps from Linux but I either do not know what I am looking for or it was not present. The most promising result seems to be from this update program for an Intel NUC model: It does not "work" for updating but it gets partway through some checks even on my HP. On the HP during execution I get a popup that says "The HDMI adapter has been detected. It is connected to an INTEL GPU." With Ghidra I see strings like: There also appears to be an Intel HEX file present. I am slowly parsing the decompilation but again it seems to be the most promising avenue. Any other advice or opinions would be appreciated. |
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While we're at it, why doesn't Parade have any firmware files on LVFS? |
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It appears the drivers have been buggy with or without firmware updates: I did email Parade support to request information about a firmware updater. Attaching dumped and extracted firmware files in case they are of interest to someone else: |
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Okay, most useful output so far I guess. |
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I happen to have another machine that has a newer Parade adapter inside: I am wondering if the 1c f8 are part of an identifier because they are similar to I2C\NAME_1AF80175:00:00. Apparently fwpdtool firmware-parse can extract version, VID, PID from binary files but that is apparently not available for parade_lspcon. I cannot find anything like a name similar to to I2C\NAME under /sys but I do see the i2c and aux interfaces. |
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@Pingyao5115 is there anything you can help with here? Thanks. |
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Describe the bug
A clear and concise description of what the bug is.
PS175 on Displayport to HDMI small board is not being detected in Elitedesk 800 G3.
Steps to Reproduce
Steps to reproduce the behavior.
Install fwupd.
Try to get devices.
Expected behavior
A clear and concise description of what you expected to happen.
Expected PS175 to be detected as in:
#6750
fwupd version information
Please provide the version of the daemon and client.
v2.0.3
Please note how you installed it (
apt,dnf,pacman, source, etc):apt
**fwupd device information**
Please provide the output of the fwupd devices recognized in your system.
Additional questions
Debian Testing (Trixie)
Yes.
Unsure.
Board example:
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