Bug 1390558

Summary:	kernel upgrade to 4.8.4 makes trackpad stop working
Product:	[Fedora] Fedora	Reporter:	tonydiep
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED WORKSFORME	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	low	Docs Contact:
Priority:	unspecified
Version:	24	CC:	gansalmon, ichavero, itamar, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone:	---	Keywords:	Reopened
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-12-13 12:14:22 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description tonydiep 2016-11-01 12:04:27 UTC

Description of problem:

After upgrade from kernel, kernel-core, kernel-modules 4.7.9 to 4.8.4, trackpad on ASUS ZenBook UX305CA (Intel® Core™ m3-6Y30) stops working after logging in.

NOTE: This is strange: The trackpad works during GDM. The trackpad stops working after logging into X session.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1.upgrade kernel-modules to 4.8.4
2.move pointer using on trackpad (work)
3.login to gnome session (trackpad stops working)

Actual results:
Trackpad stops working after logging into gnome session

Expected results:
Trackpad keeps working after logging into gnone session

Additional info:
Downgrade kernel-modules solves problem

Comment 1 tonydiep 2016-11-02 01:39:18 UTC

Just released Gnome shell update seems to have fixed the problem. Mouse pointer freezes for first few seconds after logging in but eventually works.

Comment 2 tonydiep 2016-11-02 11:57:34 UTC

Reopening. The trackpad works 1 out of 5 time if you wait 5 - 25 seconds after loggin into a gnome session. It's almost like gnome is trying to sync with the trackpad driver. 4 out of 5 times the the trackpad does not work.

Workaround is reverting back to old kernel, kernel-core, kernel-modules

Weird thing is the logon screen (GDM) has no trackpad issue.

Comment 3 tonydiep 2016-11-10 11:35:08 UTC

ISSUE
* Still cannot get trackpad to function when first logging into gnome session with kernel 4.8.6-201.fc24.x86_64 or kernel 4.8.4

CAVEAT
* May not strictly be a kernel problem (although the problem did not come up till 4.8.4)

ANOTHER WORKAROUND
* In addition to reverting to older kernels, there is another workaround.
* I found that with 4.8.4, after logging into gnome, double-tapping the trackpad (as in to get the right-click context menu on the gnome desktop) does bring up the context menu consitently although moving a finger on the trackpad and single clicking does not. The trackpad does work after that. It's like gnome is ignoring the trackpad until the double-click event is received and then processes the trackpad events.

Comment 4 tonydiep 2016-12-13 12:14:22 UTC

Fixed in kernel 4.8.12. Trackpad works as expected.