Bug 476410
| Summary: | (reltek ac97) Driver signals "writability" via poll() but snd_pcm_update_avail() says there is nothing to write | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Syam <get.sonic> |
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | low | ||
| Version: | 10 | CC: | dtlabz, gauret, kernel-maint, lkundrak, lpoetter, rdieter |
| Target Milestone: | --- | Keywords: | Triaged |
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-12-18 07:17:27 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: | |||
| Bug Depends On: | |||
| Bug Blocks: | 446451 | ||
| Attachments: | |||
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Description
Syam
2008-12-14 11:40:50 UTC
In case you are not able to reporoduce with the first attempt, please play around pausing/resuming playback from the UI and the system tray. The problem is reproducible on a Fedora 10 with nVidia MCP51 High Definition Integrated Audio. Performing repeated play/pause always results in a mess. Pulseaudio messages: D: sink.c: Processing rewind... D: sink-input.c: Have to rewind 31800 bytes on render memblockq. D: sink-input.c: Requesting rewind due to corking D: module-suspend-on-idle.c: Sink alsa_output.pci_10de_26c_sound_card_0_alsa_playback_0 becomes idle. I: module-suspend-on-idle.c: Sink alsa_output.pci_10de_26c_sound_card_0_alsa_playback_0 idle for too long, suspending ... I: module-alsa-sink.c: Device suspended... Created attachment 326863 [details]
pulseaudio -vv messages before starting Amarok
Created attachment 326864 [details]
After starting Amarok, but before playing anything
Created attachment 326865 [details]
After starting successful playback
Created attachment 326866 [details]
After closing UI, and selecting Pause from systray menu (playback pauses)
Created attachment 326867 [details]
Portion after selecting resume from systray
Playback *does not* actually resume. Amarok seekbar does not move and counter is static.
Created attachment 326868 [details]
Portion a while after resuming
Created attachment 326869 [details]
After killing Amarok process
Exiting the amarok app (from the systray) does not produce any new messages from PA.
comment #2 highlights a PA/audio_driver issue. I'll have to scour the other logs here, but I suspect I'll find the same there. Indeed! 3 Fedora releases, and PA still scares me! On my machine, I can reproduce the problem simply by pausing the audio! shrug, PA these days is very good at exposing low-level alsa/driver bugs. I'd venture that's the case here (Reltek AC'97). You're audio driver is broken. Have you seen this message? "ALSA woke us up to write new data to the device, but there was actually nothing to write! Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers." Reassigning to kernel since apparently the Realtek AC97 driver needs fixing. It signals "writability" while snd_pcm_updateavail() subsequently tells us there is nothing to write. This is more problematic than I thought. Looking for lost free space, I found that my /var/log/messages (and backed up files) run in to more than 750MB. The files are full of this message: "pulseaudio[2699]: module-alsa-sink.c: ALSA woke us up to write new data to the device, but there was actually nothing to write! Most likely this is an ALSA driver bug. Please report this issue to the PulseAudio developers.". I filed a bug with ALSA since Lennart says it's a problem with the ALSA driver. Here's the ALSA bug report: https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4339 This message is a reminder that Fedora 10 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 10. It is Fedora's policy to close all bug reports from releases that are no longer maintained. At that time this bug will be closed as WONTFIX if it remains open with a Fedora 'version' of '10'. Package Maintainer: If you wish for this bug to remain open because you plan to fix it in a currently maintained version, simply change the 'version' to a later Fedora version prior to Fedora 10's end of life. Bug Reporter: Thank you for reporting this issue and we are sorry that we may not be able to fix it before Fedora 10 is end of life. If you would still like to see this bug fixed and are able to reproduce it against a later version of Fedora please change the 'version' of this bug to the applicable version. If you are unable to change the version, please add a comment here and someone will do it for you. Although we aim to fix as many bugs as possible during every release's lifetime, sometimes those efforts are overtaken by events. Often a more recent Fedora release includes newer upstream software that fixes bugs or makes them obsolete. The process we are following is described here: http://fedoraproject.org/wiki/BugZappers/HouseKeeping Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. Thank you for reporting this bug and we are sorry it could not be fixed. |