Red Hat Bugzilla – Bug 186278
Enable CONFIG_SERIAL_8250_ACPI to add hardware support
Last modified: 2015-01-04 17:26:07 EST
Description of problem:
I have an HP TC1100 tablet where the screen is a serial Wacom tablet. If the
CONFIG_SERIAL_8250_ACPI were enabled, this hardware (and others) would be
functional. This feature is not available as a module.
Always. Recompiling the kernel with this option enabled allows the device to
Steps to Reproduce:
1. N/A - device is not recognized by default Fedora kernel
Device is not recognized.
Device should be recognized.
If there's no good reason for this to be off, let's turn it on.
this option just affects how serial ports are discovered, and the regular
methods should work just fine for that. The last time we switched this on, it
actually broke some working systems (The joys of trusting BIOS writers).
I did some googling.
Did you perhaps mean SERIAL_WACOM_ACPI ? There's an out-of-tree patch that adds
that option, which sounds promising, as it has the description "Enable a wacom
digitizer on an HP TC1100"
I suggest talking with its upstream author Chris Kemp <firstname.lastname@example.org> to try
and get that included in the kernel.org tree, and Fedora will pick it up on the