Bug 323771
| Summary: | no sound when playing media with realplayer | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 5 | Reporter: | Cameron Meadors <cmeadors> |
| Component: | kernel | Assignee: | Brian Maly <bmaly> |
| Status: | CLOSED ERRATA | QA Contact: | Martin Jenner <mjenner> |
| Severity: | high | Docs Contact: | |
| Priority: | low | ||
| Version: | 5.1 | CC: | jfeeney, peterm, zaitcev |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | RHBA-2007-0959 | Doc Type: | Bug Fix |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2007-11-07 20:05:37 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: | |||
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Description
Cameron Meadors
2007-10-08 20:38:27 UTC
If /dev/dsp doesn't exist, this is more likely to be a udev or kernel bug. Certainly not a RealPlayer bug, anyway followup info requested: - did this work in RHEL5GA (ie, is it a regression) - what hardware does this work on and what does it fail on - does sound work on those boxes for other apps? RHEL5 daily release readiness discussion: Unsure if this is really a blocker. Can't tell yet due to needed info. Ongoing investigation needed. Followup promised by QE, jrb, pgraner. Had a conf call with the Desktop (alsa) team, udev maintainer, current thoughts are that udev is not at fault and the issue lies in asla/kernel. RHEL5 GA has /dev/dsp as confirmed by kreilly jrb is following up with alsa maintainer /dev/dsp and /dev/adsp are created by snd_pcm_oss module, you can load/unload it and see if there the devices are present. That issue is not related to ALSA user-space packages, /dev/ entries are created w/o them and the udev rules there are used only for restoring a volume. Unloading and reloading snd_pcm_oss produces this error four times: device_create does not work yet for NULL parents Of course, still no devices. Creating the devices by hand does not work. Not that I expected it to. Reassigning. I'm following the reported error with device_create(). It looks to me as though the large alsa patch switched from class_device_create() to device_create() while still passing a NULL as the value to the parent argument. Well, that works with class_device_create() but not with device_create(). Upstream I see where device_create() no longer checks for a NULL parent so the patch may work if RHEL5.1 had the same code. I'm checking this now. See http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=64bb5d2c116478dba7501d2acf078ed74ba30c1f After applying the upstream patch, building, and rebooting, I have a /dev/dsp and there is no "device_create does not work yet for NULL parents" message. Brian tested the patch with RealPlayer and it worked. in 2.6.18-53.el5 You can download this test kernel from http://people.redhat.com/dzickus/el5 An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHBA-2007-0959.html |