From: bugzilla-daemon@kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 217674] Thunderbolt dock does not recognize displays connected via DP->HDMI cable
Date: Sun, 16 Jul 2023 11:15:58 +0000 [thread overview]
Message-ID: <bug-217674-208809-HCmKZEPsTl@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-217674-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=217674
Bagas Sanjaya (bagasdotme@gmail.com) changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |bagasdotme@gmail.com
--- Comment #3 from Bagas Sanjaya (bagasdotme@gmail.com) ---
(In reply to Andew Marshall from comment #0)
> Created attachment 304641 [details]
> lspci -v output
>
> Summary
> -------
>
> When using a thunderbolt dock with 2x DisplayPort connectors, the displayys
> are not recognized when connected with DP->HDMI cables. Connecting over
> DP->DP cables work as expected.
>
> Expected Behaviour
> ------------------
>
> Displays connected to the dock via DP->HDMI cables should be recognized.
>
> Actual Behaviour
> ----------------
>
> Displays connected to the dock via DP->HDMI cables are not recognized. The
> following messages are reported in `dmesg`
>
> ```
> [68022.156971] thunderbolt 0-2: new device found, vendor=0x6f device=0x12
> [68022.156977] thunderbolt 0-2: StarTech.com TB3CDK2DP
> ...various USB connection messages...
> [68139.834086] [drm] DMUB HPD callback: link_index=2
> [68139.834859] [drm] DPIA AUX failed on 0x0(1), error 3
> [68139.836167] [drm] DPIA AUX failed on 0x0(1), error 3
> (etc)
> ```
> USB ports and network connection functions as expected.
>
>
> Steps to Reproduce
> ------------------
>
> Laptop used is Asus G14 (2023) model GA402NV
> Dock is Startech TB3CDK2DP
> Reproduced on Linux Kernel 6.4.3 from stable repo
>
> 1. Connect laptop to dock over USB-C
> 2. Connect an external display with DP->HDMI cable
> 3. Open appropriate display settings to see if external display is
> recognized.
Do you have this issue on v6.1 stable series?
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next prev parent reply other threads:[~2023-07-16 11:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-16 9:10 [Bug 217674] New: Thunderbolt dock does not recognize displays connected via DP->HDMI cable bugzilla-daemon
2023-07-16 9:17 ` [Bug 217674] " bugzilla-daemon
2023-07-16 9:18 ` bugzilla-daemon
2023-07-16 11:15 ` bugzilla-daemon [this message]
2023-07-16 20:46 ` bugzilla-daemon
2023-07-17 19:37 ` bugzilla-daemon
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