mtrack driver seems to not be working correctly on mid-2015 15 inch macbook pro

isomarcte commented 9 years ago

Hey everyone,

I am running Linux on a mid 2015 15 inch macbook pro. I have been trying in vain to get the mtrack driver to work with the trackpad so that it behaves more like OS X. First off, I realize this may be a moot issue for the time being, because the trackpads on 2015 MBPs don't officially work completely with the current Linux kernel (See the linked bug at the bottom). Specifically, multitouch input is not detected right now. However I was able to fix the multitouch issue by recomiling the Linux kernel with the two patches proposed on this kernel bug issue.

That being said, while mutlitouch and two-finger scrolling is now working out of the box, I can't seem to configure it.

Here are my specific issues,

Any changes to the my /etc/X11/xorg.conf.d/99-trackpad.conf file seem to have either no effect at all on the trackpad or they cause some sort of crash when I try to login to Gnome (after which I revert my changes in the file, restart the GDM and then I can log in again.) I have tried many changes in the conf file and most do nothing. One specific example of a change that will crash Gnome is setting the "TrackpadDisable" value to "3". I did this as an oracle to see if X was even reading my changes to this file. When I set this value to "3" Gnome will consistently crash on login.
I use Gnome as my desktop environment, it detects a "touchpad" under the mouse settings, but it also detects a "mouse". Changes to the "touchpad" have no effect on anything as far as I can tell, however If I change the sensitivity on the "mouse" then the sensitivity on both a USB mouse and the actual trackpad are effected.

By the way, when I say that Gnome "crashed" what I really mean to say is that when I attempt to login to my profile, it accepts my password, starts login, then restarts the GDM as though I had never logged in. I am not actually sure what is happening there...but they best term I can use to describe it is a crash. System logs don't seem to show anything like the service restarting so I am somewhat at a loss.

Relevant Information

Kernel Bug: https://bugzilla.kernel.org/show_bug.cgi?id=96771 Patch 1: https://bugzilla.kernel.org/attachment.cgi?id=175481&action=diff Patch 2: https://bugzilla.kernel.org/attachment.cgi?id=177881&action=diff

Linux: Linux foobar 4.0.5-1-mac #1 SMP PREEMPT Sat Jun 13 15:40:47 MDT 2015 x86_64 GNU/Linux xorg-server: 1.17.1 Gnome: GNOME Shell 3.16.2

If anyone has any ideas what is going on and how to fix it so I can configure the trackpad, I would be very appreciative. I am also just trying to get some help figuring out just where the issue is, i.e. Am I configuring mtrack incorrectly? Is Gnome screwing with the X configuration? Is the Linux patch not fully fixing the issues with the new trackpads (in which case I will report this upstream)? Or does mtrack just not yet fully support these new trackpads?

Also please forgive any grave mistakes I have made in this posting. I do not know much about X configuration.

Thanks in advance

isomarcte commented 9 years ago

I believe I have found at least part of the issue.

I noticed this in the system log.

Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) input device 'Apple Inc. Apple Internal Keyboard / Trackpad', /dev/input/event5 is a keyboard
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) config/udev: Adding input device bcm5974 (/dev/input/event11)
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "evdev touchpad catchall"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "Touchpads"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "touchpad catchall"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "Default clickpad buttons"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "Disable clickpad buttons on Apple touchpads"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "libinput touchpad catchall"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: Applying InputClass "Touchpads"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) LoadModule: "mtrack"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) Loading /usr/lib/xorg/modules/input/mtrack_drv.so
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) Module mtrack: vendor="X.Org Foundation"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: compiled for 1.17.1, module version = 0.1.0
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: Module class: X.Org XInput Driver
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: ABI class: X.Org XInput driver, version 21.1
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) Using input driver 'mtrack' for 'bcm5974'
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: always reports core events
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) bcm5974: always reports core events
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "FingerHigh" "5"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "FingerLow" "1"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "IgnoreThumb" "true"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "IgnorePalm" "true"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "DisableOnPalm" "true"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "BottomEdge" "30"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ButtonIntegrated" "true"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ClickFinger1" "1"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ClickFinger2" "2"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ClickFinger3" "3"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ButtonMoveEmulate" "false"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "TapButton1" "1"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "TapButton2" "3"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "TapButton3" "2"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "TapButton4" "0"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ClickTime" "25"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "ScrollDistance" "75"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "SwipeUpButton" "0"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "SwipeDownButton" "0"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "SwipeLeftButton" "8"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "SwipeRightButton" "9"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "Sensitivity" "0.64"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb1/1-12/1-12:1.2/input/input11/event11"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) XINPUT: Adding extended input device "bcm5974" (type: TOUCHPAD, id 12)
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) device control: init
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (**) Option "Device" "/dev/input/event11"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) xf86OpenSerial: Cannot open device /dev/input/event11
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: Permission denied.
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) mtrack: cannot open device
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) Couldn't init device "bcm5974"
15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: Permission denied.
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) mtrack: cannot open device
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) Couldn't init device "bcm5974"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) UnloadModule: "mtrack"

Specifically these lines towards the bottom.

Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) xf86OpenSerial: Cannot open device /dev/input/event11
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: Permission denied.
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) mtrack: cannot open device
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) Couldn't init device "bcm5974"
15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: Permission denied.
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) mtrack: cannot open device
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (EE) Couldn't init device "bcm5974"
Jun 14 18:15:35 foobar /usr/lib/gdm/gdm-x-session[9537]: (II) UnloadModule: "mtrack"

Any ideas what would cause that?

isomarcte commented 9 years ago

Okay. Adding myself to the input group seems like it might have solved the issue. Any idea why I had to do that? Is that normal for mtrack?

rynbrd commented 9 years ago

Your user needs access to the input devices. You have to be in the input group for that =)

garrett92895 commented 9 years ago

Because the newer versions of Xorg are rootless, they do not have permission to access input devices by default.

rynbrd / xf86-input-mtrack

mtrack driver seems to not be working correctly on mid-2015 15 inch macbook pro #90