Public bug reported:

[Summary]
Fail to detect card after unplugging DPoC cable and reboot

Still can reproduce the issue after upgrading kenrel to 5.15.0-1033-mtk

[Steps to reproduce]
1. Flash image
2. Go to U-Boot shell and add display-dsidp.dtbo to list_dtbo
3. Reboot system with DPoC connected
4. Unplug DPoC cable and reboot system
5. Check if the card can be detected
$ pactl list cards

[Expected result]
The card can be detected

[Actual result]
no card is detected

[Failure rate]
100%

[Additional information]
SKU: G1200-evk P1V2, G510
Image: genio-classic-desktop-2204-20240322-185.tar.xz
kernel-version: 5.15.0-1030-mtk

---
The issue is gone after changing following values to default values.
$ amixer -c 0 cset name='DPTX_OUT_MUX' 0
$ amixer -c 0 cset name='HDMI_OUT_MUX' 1

LP: #2079780

** Affects: linux-mtk (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-mtk (Ubuntu Jammy)
     Importance: Undecided
         Status: New

** Also affects: linux-mtk (Ubuntu Jammy)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2090979

Title:
  Fail to detect card after unplugging DPoC cable and reboot

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