Bug 614573
| Summary: | fprintd blocks screen unlock | ||||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Dan Williams <dcbw> | ||||||
| Component: | fprintd | Assignee: | Bastien Nocera <bnocera> | ||||||
| Status: | CLOSED CURRENTRELEASE | QA Contact: | desktop-bugs <desktop-bugs> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | low | ||||||||
| Version: | 6.0 | CC: | airlied, borgan, cmeadors, ddumas, jmccann, rstrode, stransky, vbenes | ||||||
| Target Milestone: | rc | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | All | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | fprintd-0.1-19.git04fd09cfa.el6 | Doc Type: | Bug Fix | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2010-11-10 20:24:18 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Embargoed: | |||||||||
| Attachments: |
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Description
Dan Williams
2010-07-14 19:11:10 UTC
Created attachment 431885 [details]
screensaver log from launch until password timeout
gnome-screensaver-2.28.3-7.el6.i686 fprintd-0.1-18.git04fd09cfa.el6.i686 Created attachment 431886 [details]
log from 2.28.3-5.el6 with *works*
So downgrading to gnome-screensaver-2.28.3-5.el6 makes things work again. THe problem appears to be caused by patch #14, remove-theme-support.patch. Builds without that patch do not exhibit the hang. can't unlock screen is a serious blocker, devack+ I spent some time trying to reproduce this yesterday and came up short. I also read through the patch and can't come up with anything immediately plausible. We can always revert the patch I guess, but I'd like to avoid that if possible. Roderick, any chance you could set up a test user that I could remotely debug with? So Roderick McCloud (Dan Williams) set up vnc on his machine and I was able to reproduce. It took several hours for me to figure out the problem, but it turns out to be an issue in pam_fprintd. pam_fprintd is very careful to use its own main loop context (as it should) to prevent getting in the way of the gnome-screensaver. Unfortunately, there's a small bug in its logic where it ends up removing a random file descriptor from the default context. In Dan's case that file descriptor is really important. It's what tells gnome-screensaver when to drop the dialog. The patch is as simple as: - g_source_remove (timeout_id); + g_source_destroy (source); (g_source_remove always operates on the default context) marking MODIFIED *** Bug 613970 has been marked as a duplicate of this bug. *** cannot see this error any more in snapshot 9 -> VERIFIED Red Hat Enterprise Linux 6.0 is now available and should resolve the problem described in this bug report. This report is therefore being closed with a resolution of CURRENTRELEASE. You may reopen this bug report if the solution does not work for you. |