[Bug 2122398] Re: No on-screen keyboard on dell tablets

https://lkml.org/lkml/2025/11/27/285

** Description changed:

[Impact]
No on-screen keyboard in gdm and can't enter password if there is no keyboard is connected.

[Fix]
Added those tablets to dmi_vgbs_allow_list() to read tablet mode while probing fixes the issue.
- Currently, we use the product SKU in the DMI quirk. I'll submit a patch upstream with the real product name once the machines reach the market.
+ https://lkml.org/lkml/2025/11/27/285

[Test]
Boot up the affected tablets to gdm without touching any physical keys, the on-screen keyboard should pop up.

[Where problems could occur]
Current BIOS is reliablely to report the tablet mode during probing intel hid driver, but when it fails, it may report the wrong state and show the on-screen keyboard when keyboard is connected.

** Also affects: linux-oem-6.17 (Ubuntu)
Importance: Undecided
Status: New

** Changed in: linux-oem-6.17 (Ubuntu Noble)
Status: New => In Progress

** Changed in: linux-oem-6.17 (Ubuntu Noble)
Assignee: (unassigned) => AceLan Kao (acelankao)

** Changed in: linux-oem-6.17 (Ubuntu Questing)
Status: New => Invalid

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https://bugs.launchpad.net/bugs/2122398

Title:
No on-screen keyboard on dell tablets

Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.14 package in Ubuntu:
Invalid
Status in linux-oem-6.17 package in Ubuntu:
New
Status in linux source package in Noble:
In Progress
Status in linux-oem-6.14 source package in Noble:
Fix Released
Status in linux-oem-6.17 source package in Noble:
In Progress
Status in linux source package in Questing:
In Progress
Status in linux-oem-6.14 source package in Questing:
Invalid
Status in linux-oem-6.17 source package in Questing:
Invalid

Bug description:
[Impact]
No on-screen keyboard in gdm and can't enter password if there is no keyboard is connected.

[Fix]
Added those tablets to dmi_vgbs_allow_list() to read tablet mode while probing fixes the issue.
https://lkml.org/lkml/2025/11/27/285

[Test]
Boot up the affected tablets to gdm without touching any physical keys, the on-screen keyboard should pop up.

[Where problems could occur]
Current BIOS is reliablely to report the tablet mode during probing intel hid driver, but when it fails, it may report the wrong state and show the on-screen keyboard when keyboard is connected.

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