** Tags added: patch
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https://bugs.launchpad.net/bugs/1195822
Title:
MacBook Air 6,2 (mid2013) Touchpad is Non-Functional
Status in The Linux Kernel:
Unknown
Status in “linux” package in Ubuntu:
Confirmed
Bug description:
The MacBook Air 6,2 models (11 and 13 inch) touchpad is basically
broken; it does not function as a multitouch device, rather it
provides the functionality of a basic single-click mouse. All
multitouch capabilities are broken (right-click, scroll, gestures,
etc.).
I would expect that the touchpad would function as a normal fully-
functional touchpad, instead the touchpad functionality is limited to
mouse-movement and left-clicking.
The 2013 MacBook Air laptops have a new hardware touchpad device
(05ac:0291) which is not compatible with the 'bcm5974' multitouch
driver. As a result, the generic 'usbhid' is being associated with
the device (evident in /sys/bus/usb/drivers/usbhid/), which has the
effect of the touchpad being registered as a 'Pointer' rather than a
'Touchpad' in X. As a result, it is assigned the generic evdev X
mouse driver rather than the synaptics X driver.
I have been able to 'force' the touchpad to be associated with the
'bcm5974' kernel driver (via sysfs), however, the driver fails to
communicate with the hardware and no mouse functionality is available.
In this case the bcm5974 reports 'could not read from device' in
dmesg.
ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: linux-image-3.9.0-7-generic 3.9.0-7.15
ProcVersionSignature: Ubuntu 3.9.0-7.15-generic 3.9.7
Uname: Linux 3.9.0-7-generic x86_64
ApportVersion: 2.10.2-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lubuntu 2821 F.... lxpanel
CRDA: Error: [Errno 2] No such file or directory: 'iw'
CasperVersion: 1.334
Date: Fri Jun 28 17:14:48 2013
IwConfig:
eth0 no wireless extensions.
lo no wireless extensions.
LiveMediaBuild: Lubuntu 13.10 "Saucy Salamander" - Alpha amd64+mac
(20130625.2)
MachineType: Apple Inc. MacBookAir6,2
MarkForUpload: True
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper
initrd=/casper/initrd.lz quiet splash --
RelatedPackageVersions:
linux-restricted-modules-3.9.0-7-generic N/A
linux-backports-modules-3.9.0-7-generic N/A
linux-firmware 1.109
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: zram
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/24/2013
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA61.88Z.0099.B00.1305241529
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-7DF21CB3ED6977E5
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir6,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-7DF21CB3ED6977E5
dmi.modalias:
dmi:bvnAppleInc.:bvrMBA61.88Z.0099.B00.1305241529:bd05/24/2013:svnAppleInc.:pnMacBookAir6,2:pvr1.0:rvnAppleInc.:rnMac-7DF21CB3ED6977E5:rvrMacBookAir6,2:cvnAppleInc.:ct10:cvrMac-7DF21CB3ED6977E5:
dmi.product.name: MacBookAir6,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
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