fixed in 5.15.22
** Changed in: linux (Ubuntu Jammy)
Status: In Progress => Fix Released
** Changed in: linux (Ubuntu)
Status: In Progress => Fix Released
** Changed in: hwe-next
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1959061
Title:
The display output on type-c hub doesn't work on ADL platform
Status in HWE Next:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Invalid
Status in linux-oem-5.14 source package in Focal:
Fix Released
Status in linux source package in Jammy:
Fix Released
Status in linux-oem-5.14 source package in Jammy:
Invalid
Bug description:
[Impact]
The display output(DP/HDMI) on the USB type-c hub doesn't work. No display
output device could be found after the monitor is plugged into the hub.
[Fix]
Intel provide a new patch to fix this issue on ADL platforms.
[Test]
Verified on ADL platform with different type-c hubs, the display output works.
[Where problems could occur]
The TCSS_DDI_STATUS register is indexed by tc_port not by the FIA port index.
So, this patch is more like a fix and only affect ADL platforms. And as the
commit log describes, the value is wrong on TC#3/4 ports, so it won't affect
the origin working ports.
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