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Bug 1773815 - mouse buttons stop responding due to frequent mouse clicks after entering password in GDM login screen
Summary: mouse buttons stop responding due to frequent mouse clicks after entering pas...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: xorg-x11-server
Version: 7.7
Hardware: Unspecified
OS: Unspecified
unspecified
high
Target Milestone: rc
: ---
Assignee: Adam Jackson
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-11-19 02:01 UTC by Yuki Okada
Modified: 2023-12-15 16:57 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-11 21:57:16 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Yuki Okada 2019-11-19 02:01:43 UTC 
Description of problem:
- Mouse buttons stop responding if mouse buttons are clicked as quickly as possible after entering password in GDM login screen until GNOME desktop appears. 
- We can move the mouse cursor but clicking does not work.

Version-Release number of selected component (if applicable):
- mutter-3.28.3-10.el7.x86_64
- gnome-shell-3.28.3-11.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1. Install RHEL 7.7 "Server with GUI" with default options
2. Select user and enter password in GDM login screen
3. Click left and right mouse buttons as quickly as possible until GNOME desktop screen appears
4. Mouse cursor moves normally, but clicking does not work.

Actual results:
- mouse buttons stop responding

Expected results:
- mouse behaves normally

Additional info:
- Similar issue is reported in BZ#1657887, and this is fixed in mutter-3.28.3-16.el7 and gnome-shell-3.28.3-18.el7. However, our issue is reproducible even in RHEL 7.8 beta where the fix of BZ#1657887 is included.
- This issue is reproducible in customer's touchscreen environment.
Comment 6 Jonas Ådahl 2020-06-23 07:08:44 UTC 
I have debugged this to see what mutter, gnome-shell or gtk is doing that could cause this, but after having traced any grab related protocol done via e.g. libXi, I can conclude that mutter does nothing that should trigger a grab like this. Also, it seems the grab that I can see getting stuck is an implicit passive grab gone active, which is server side. Thus, this seems like a server issue.

I can reproduce the issue in rhel-7.7 to rhel-7.9, as well as rhel-8.3 and F32, using virt-manager. Steps to reproduce:

 1. Install e.g. F32 in virt-manager
 2. Choose GNOME X11 session
 3. Immediately after having hit the Enter key when logging in, I click on the virt-manager window quickly and repeatedly until the GNOME session appears

The result is sometimes that the UI can't be interacted with using the mouse. When this happens in the Xserver log I see

Active grab 0x400000 (xi2) on device 'Virtual core pointer' (2):
      client pid 5246 /usr/bin/gnome-shell
      at 714124 (from passive grab) (implicit) (device thawed, state 1)
      xi2 event mask for device 2: 0x70000
      passive grab type 4, detail 0x0, activating key 0
      owner-events false, kb 1 ptr 1, confine 0, cursor 0x0

after having triggerd XF86LogGrabInfo.

The grab type 4 is a button press one, and the event mask is button press/release/motion.
Comment 7 Peter Hutterer 2020-06-24 06:39:54 UTC 
Unfortunately, the reproducer in comment 6 was almost certainly a different issue. The button on the QEMU USB tablet was stuck permanently down if it was down when the spice-vdagent tablet was started. I've filed a bug for this upstream: https://gitlab.freedesktop.org/spice/linux/vd_agent/-/issues/23. We're still investigating how to reproduce and/or debug the customer's original issue.
Comment 8 Peter Hutterer 2020-06-24 06:43:27 UTC 
Yuki: can we have an evemu-record output of the touchscreen in question please? evemu-record is in epel7. Is this a true touch screen or an old-style one that emulates an absolute mouse? If evemu-record cannot possibly be installed, the /proc/bus/input/devices file will do (but that's a last resort).
Comment 14 Chris Williams 2020-11-11 21:57:16 UTC 
Red Hat Enterprise Linux 7 shipped it's final minor release on September 29th, 2020. 7.9 was the last minor releases scheduled for RHEL 7.
From intial triage it does not appear the remaining Bugzillas meet the inclusion criteria for Maintenance Phase 2 and will now be closed. 

From the RHEL life cycle page:
https://access.redhat.com/support/policy/updates/errata#Maintenance_Support_2_Phase
"During Maintenance Support 2 Phase for Red Hat Enterprise Linux version 7,Red Hat defined Critical and Important impact Security Advisories (RHSAs) and selected (at Red Hat discretion) Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available."

If this BZ was closed in error and meets the above criteria please re-open it flag for 7.9.z, provide suitable business and technical justifications, and follow the process for Accelerated Fixes:
https://source.redhat.com/groups/public/pnt-cxno/pnt_customer_experience_and_operations_wiki/support_delivery_accelerated_fix_release_handbook  

Feature Requests can re-opened and moved to RHEL 8 if the desired functionality is not already present in the product. 

Please reach out to the applicable Product Experience Engineer[0] if you have any questions or concerns.  

[0] https://bugzilla.redhat.com/page.cgi?id=agile_component_mapping.html&product=Red+Hat+Enterprise+Linux+7
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