Bug 186278 - Enable CONFIG_SERIAL_8250_ACPI to add hardware support
Enable CONFIG_SERIAL_8250_ACPI to add hardware support
Status: CLOSED UPSTREAM
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
5
i386 Linux
medium Severity medium
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Assigned To: Dave Jones
Brian Brock
: FutureFeature
Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2006-03-22 12:49 EST by Dave Ludlow
Modified: 2015-01-04 17:26 EST (History)
2 users (show)

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Doc Type: Enhancement
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Last Closed: 2006-03-24 18:06:59 EST
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Description Dave Ludlow 2006-03-22 12:49:55 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.

How reproducible:
Always.  Recompiling the kernel with this option enabled allows the device to
work fine.

Steps to Reproduce:
1. N/A - device is not recognized by default Fedora kernel
  
Actual results:
Device is not recognized.

Expected results:
Device should be recognized.

Additional info:
If there's no good reason for this to be off, let's turn it on.
Comment 1 Dave Jones 2006-03-24 18:06:59 EST
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 <ck231@cam.ac.uk> to try
and get that included in the kernel.org tree, and Fedora will pick it up on the
next rebase.

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