[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
Same issue on MacBook Pro 8,2 with Ubuntu 16.04 and Ubuntu 16.10. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
Same situation in 14.10. Is anybody upstream looking at this? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
i'm not an expert, but i did have sound problems installing Windows OS in EFI mode. Did you try booting into the normal CD when installing linux? (If you did it by USB then it probably was EFI mode, since macbooks can only boot that way from them.) *There's usually two options when booting into CD, when you hold alt/option at startup Not that i've tried it, but it might be what is causing it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
** Package changed: linux (Ubuntu) = alsa-driver (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
take a look at cs4207 datasheet http://www.cirrus.com/en/products/cs4207.html -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
http://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/log/sound/pci/hda/patch_cirrus.c -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
It seems I found the answer to my question/bugreport. My macbook pro 8.1 13-inch really has 3 speakers: left, right and so called (by Apple) subwoofer - standalone additional speaker, which is located on the right side (this is important!). It is a really new thing for me (after 2 years of using laptop). So alsamixer (and intel-hda driver) is absolutely correct naming one of the controls as Bass speaker. Other items in alsamixer are: Master, Speaker, Headphone and PCM. Now the important thing: if I set to 0 right channel of Speaker in alsamixer, the left sounds like it was in Mac OS in the same mode (balance shifted to left speaker) - that is the right way how the balance should work! But balance slider in Ubuntu sound panel (let's call it slider U) works very strange: at first, when i start to move it to the left - alsamixer's Speaker right channel (slider A) goes down as it should be. But when slider U is approx. 5% till the end, slider A is already 0! At this point the sound is ok (coming from left speaker, but with bass as it should be). And if I continue to move slider U till the end, I see right PCM going down dramatically fast in alsamixer. And now the sound is incorrect (as stated in my bugreport). So I can say that when in normal mode (balance set to 50/50) the sound is ok and identical to Mac OS. The questions are: 1) Why does ubuntu's sound panel (and pavucontrol too) treat subwoofer speaker as the right one? 2) Why does ubuntu's sound panel balance slider behave in such strange way (described above)? 2) Why is the subwoofer speaker included in right channel of PCM control (in alsamixer)? Overall, I am happy to solve this puzzle (the answer looks so simple if to look back). Please tell me, should I post a new report(s) or leave it as is? And sorry for my Russian English :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
** Package changed: linux-meta (Ubuntu) = linux (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.12 kernel[0]. If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as Confirmed. Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-rc3-saucy/ ** Changed in: linux (Ubuntu) Importance: Undecided = Medium ** Changed in: linux (Ubuntu) Status: New = Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
Joseph, thanks for the answer. Have just tried latest 3.12 kernel, but the bug is still there :( I ll try to use hda-analyzer tool from alsa-project just to see what happening when I move the Bass speaker slider in alsamixer. It seems to me, that only right channel' slider of this mixer item works, while left always stays at 0, regarless of slider position. ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete = Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1234252] Re: [MacBookPro8, 1, CS4206] Left speaker low volume and absence of low freqs
Well, hda-analyzer tool running in monitor mode shows that volume level of Bass speaker changes while moving corresponding sliders (left and right) in alsamixer, but those changes affect only right channel. Feel free to ask me for additional info/logs or for triyng defferent versions of kernel etc. I can ever totally ruin current installation with no sorrow, cause my main goal now is to struggle that bug and make ubuntu my main OS on that laptop. Thank you for your help. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1234252 Title: [MacBookPro8,1, CS4206] Left speaker low volume and absence of low freqs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1234252/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
