Description of problem: Using kernel-2.6.23.1-49.fc8 on a second gen macbook pro, there is a constant static/popping in the left channel audio. Some programs (such as skype) only output audio on the left channel, whereas others (like amarok) can output stereo but with the aforementioned distortion. I also have duplicated mixer controls for Capture, Mux, and Input Source that were not present on first boot. Disabling their display does not stick. External speakers are still solely controlled by the Surround control. Version-Release number of selected component (if applicable): Kernel 2.6.23.1-49 on Fedora 8. How reproducible: Seems to be always but I'll update if I manage to get it to boot with clean sound. Steps to Reproduce: 1. Boot. 2. Play sound. Actual results: Distortion in left audio channel. Expected results: Clean sound. Additional info: I have a Fedora 7 bug filed for the same problem. See bug 368901.
Created attachment 257431 [details] scsconfig.log
Hello, I'm reviewing this bug as part of the kernel bug triage project, an attempt to isolate current bugs in the Fedora kernel. http://fedoraproject.org/wiki/KernelBugTriage I am CC'ing myself to this bug and will try and assist you in resolving it if I can. There hasn't been much activity on this bug for a while. Could you tell me if you are still having problems with the latest kernel? If the problem no longer exists then please close this bug or I'll do so in a few days if there is no additional information lodged.
*** Bug 368901 has been marked as a duplicate of this bug. ***
The last time this happened (it's been awhile now) I was able to fix the problem by powering off the machine, removing the battery, waiting (10 seconds), replacing the battery, and powering the machine back up. I'm not sure if this is software related or not. This used to happen on every power up and now it's been at least a month since the last occurrence.
Hello Ryan, Thanks for the update - I'll close this for the moment as INSUFFICIENT_DATA but please re-open if it re-occurs. Thanks for taking the time to file the original report. Cheers Chris
It just happened again. I'm beginning to think that it's only when I boot into windows and then reboot to linux that the problem has a chance of happening. I'm not sure if the windows driver is putting the card into a state that's not being reset properly by the linux driver.
Okay, when the problem re-occurs again for you can you post the output of the following commands as separate text/plain attachments. # lspci -vvxxx > lspci.out dmesg > dmesg.out Can you also confirm you are using the latest kernel and I'll update the bug summary to reflect that. You may wish to test with a 2.6.24-based kernel as well as and when you are able. Cheers Chris
I'm currently running 2.6.23.9-85.fc8. I'll post the requested files the next time it happens. I'll work on booting a 2.6.24 kernel as well.
Okay, thanks Ryan. Setting back to NEEDINFO to indicate we're waiting on some more tests from you.
I just installed kernel 2.6.23.14-107.fc8 via yum, rebooted (twice), and then noticed that my left channel audio is distorted. Attaching requested files.
Created attachment 293020 [details] lspci.out
Created attachment 293021 [details] dmesg.out
Comment on attachment 293021 [details] dmesg.out Bad MIME type.
Could you try booting up using the radeon graphics driver (as opposed to fglrx) and with vmware stuff disabled and see if this makes a difference. Also of possible interest: https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/146558 http://gentoo-wiki.com/HARDWARE_Apple_MacBook#Crackling_Sound_on_the_left_Channel Let me know how you get on. Cheers Chris
This message is a reminder that Fedora 8 is nearing its end of life. Approximately 30 (thirty) days from now Fedora will stop maintaining and issuing updates for Fedora 8. 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 '8'. 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 8'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 8 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 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 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.
I periodically still get reminders to test this bug. Responding to clear the queue.