[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Thanks, I now posted to the right mailing list: http://lists.freedesktop.org/archives/intel-gfx/2015-October/077193.html -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1296224 Title:

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Sorry, too many instructions and too many dead ends in those. I just appended the info that I missed out. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1296224 Title: Horrible noise

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, unfortunately you didn't follow the Kernel.org format advised in the wiki, which provides a lot of helpful information. For example, posting lspci by itself is largely useless without the switches. -- You received this bug notification because you are a member of Kernel

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

I cc'd both of them on the ticket, so they should notice. Anyway, I just tried mailing intel-...@vger.kernel.org but that address doesn't exist: : host vger.kernel.org[209.132.180.67] said: 554 5.0.0 Hi [78.46.152.204], unresolvable address:

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, while I did advise in my comment: >"intel-gfx CC Jani Nikula and Todd Previte" because there is no guarantee either Jani or Todd are looking at bugzilla, or accept reports there, I see why this confusion occurred. Hence, I've clarified the wiki so this shouldn't be a problem

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

According to your linked instructions, the intel graphics teams does not seem to use a mailing list for bug reports. Instead, I reported it in their bugtracker: https://bugs.freedesktop.org/show_bug.cgi?id=92237 ** Bug watch added: freedesktop.org Bugzilla #92237

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, the mailing list address as per the wiki references to http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/MAINTAINERS which states : intel-...@lists.freedesktop.org -- You received this bug notification because you are a member of Kernel Packages, which is

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

I bisected the bug down to this commit: commit fdbc3b1f639bb2cbfb32c612b2699e0ba373317d Author: Jani Nikula Date: Tue Nov 12 17:10:13 2013 +0200 drm/i915/dp: set sink to power down mode on dp disable FWIW, here is the full bisect log: $ git bisect log # bad:

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, the issue you are reporting is an upstream one. Could you please report this problem following the instructions verbatim at https://wiki.ubuntu.com/Bugs/Upstream/kernel to the appropriate mailing list (intel-gfx CC Jani Nikula and Todd Previte)? Please provide a direct URL to

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Christopher, be aware that up to now I mainly tested by booting live CDs, so of course also all other packages changed as well. But I just tested two more mainline kernels on my 15.04 system (so without changing any of the other packages): 3.12.48-0131248-generic: WORKS FINE. This is the last

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Christopher, I tried building the kernel from git source (git://kernel.ubuntu.com/ubuntu/ubuntu-trusty.git) but it always boots up without the necessary drivers. Only with "dummy" sound and just a basic screen resolution without support for dual screen etc. I followed:

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, binaries are available for prior versions as outlined in https://wiki.ubuntu.com/Kernel/KernelBisection . -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1296224 Title:

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Christopher, before I take this effort I have two questions: 1) Are you sure this is a regression in the kernel itself? It could also be a bug in another package (e.g. xserver-xorg-video-intel), right? 2) Do kernels in the 3.11.0-3.13.0 range work in combination with a modern 15.04 distribution?

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, you have a clear, and obvious kernel regression as per your previous comments. If this was a bug in a different package, then keeping the linux kernel version the same, but changing the other package would cause the change in functionality. One is free to test as old a kernel

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

I just found old-releases.ubuntu.com. Ubuntu 13.10 (kernel 3.11.0-12-generic) is the last version that doesn't have this bug! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1296224

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

To sum it up: 3.8.0-19-generic: could not enable HDMI audio, though I believe it was possible somehow 3.11.0-12-generic: WORKS FINE 3.13.0-18-generic: BUG 3.13.0-45-generic: BUG 3.19.0-28-generic: BUG 4.3-rc3: BUG -- You received this bug notification because you are a member of Kernel

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

I just tried Ubuntu 12.04.5 LTS (kernel 3.13.0-45-generic) and the problem exists. Where can I download images for the (now EOL'ed) Q, R and S releases? ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, could you please advise what was the most recent release this problem did not occur in? ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

The bug also exists on upstream kernel 4.3-rc3. ** Tags added: kernel-bug-exists-upstream-4.3-rc3 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, the next step is to fully commit bisect from kernel 3.11 to 3.13 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following

[Kernel-packages] [Bug 1296224] Re: Horrible noise via DisplayPort [regression]

Andreas Schildbach, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are