Bug 71049

Created attachment 88364 [details]
dmesg

Created attachment 88365 [details]
lspci

Created attachment 88366 [details]
Xorg log

Created attachment 88367 [details]
xrandr output

Created attachment 88368 [details]
i915opregion

Created attachment 88369 [details]
interegsnapshot

Does this happen at all resolutions? In particular is the display fine at native resolution?

I have tried 1440x900 and 2880x1800 and both was the same. By the way, I'm using EFI mode with grub2. Also, plymouth is also garbled.

Yes, this happens for all resolutions. I have the same issue with the latest Fedora 20 nightly live cd.

Hi

Can you please try this patch?
https://bugzilla.kernel.org/attachment.cgi?id=111321&action=diff

This sounds like https://bugzilla.kernel.org/show_bug.cgi?id=59841.

Thanks,
Paulo

Created attachment 88419 [details]
dmesg output on linux-drm-intel-nightly-20131031

I have tried linux-drm-intel-nightly-20131031 package[1] from Ubuntu mainline, which seems to have that patch[2], but problem still exists.

dmesg is attached.

[1] http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/current/
[2] http://kernel.ubuntu.com/~kernel-ppa/mainline/drm-intel-nightly/current/CHANGES

Created attachment 88803 [details]
Additional screenshot (console)

Created attachment 88804 [details]
Additional screenshot

Note that https://bugzilla.kernel.org/show_bug.cgi?id=59841 mentions a blank screen.  This bug is about a corrupt screen.

There is something wrong with some of the vertical columns.  Many columns seem to actually be correct but are perhaps out of sync.

This bug may be a kernel or driver level issue because it manifests in both Xorg and on the console once it switches modes on boot up.

Joseph, regression? Which versions worked?

(In reply to comment #15)
> Joseph, regression? Which versions worked?

Hi, i don't understand why this is marked as regression. I have been unable to ever get this working correctly for me. Those of us over at arch with MBP11,2 have been using nomodeset and xf86-video-fbdev as a temporary solution.

(Those additional screenshots are actually mine.) Is there any info/logs i can provide to help along a solution to this?

I have tried using kernel 3.12rc7 and xf86-video-intel-devel 2.99.905-1, and neither help. I suspect it's something to do with a high bandwidth DP link due to resolution and/or HD5200 iris pro.

Paulo Zanoni, I see you are from Intel.  What can we do to help move this along?  Is it possible that an update was made to the OSX driver that has not yet made it into the Open-Source driver?

According to this thread: http://forums.opensuse.org/english/get-technical-help-here/hardware/489145-intel-hd-5200-iris-pro.html, the HD 5200 iris does work in Linux but has some issues.  So the show stopper described here has to do with the specific combination of the HD 5200 and the 15" retina display.

Ok, please grab the latest intel-gpu-tools from git at http://cgit.freedesktop.org/xorg/app/intel-gpu-tools/

Then please grab the output of the intel_reg_dumper tool both for the kms driver and with the kms driver disabled (i915.modeset=0) and attach it to this bug report (as individual files).

Created attachment 89161 [details]
KMS-enabled intel_reg_dumper output (latest libdrm + intel_gpu_tools)

Here you are.

Created attachment 89162 [details]
KMS-disabled intel_reg_dumper output (latest libdrm + intel_gpu_tools)

and this is intel_reg_dumper output with KMS disabled.

This should be fixed with 3.12, specifically

commit c6cd2ee2d59111a07cd9199564c9bdcb2d11e5cf
Author: Jani Nikula <jani.nikula@intel.com>
Date:   Mon Oct 21 10:52:07 2013 +0300

    drm/i915/dp: workaround BIOS eDP bpp clamping issue

-rc7 doesn't have this patch. Thanks for reporting this issue and please reopen in case my analysis is wrong and the bug isn't fixed. In that case please attach a new drm.debug and kms reg dump when running 3.12.

No, this commit doesn't fix it. In comment #11, I had said I tried this patch which was in intel-drm-nightly-20131031, and to be sure I have tried latest intel-drm-nightly and mainline 3.12, but no luck, still the same. I am attaching drm.debug dmesgs now.

Created attachment 89175 [details]
dmesg output (drm.debug=0x06, kernel intel-drm-nightly-20131113)

Created attachment 89176 [details]
dmesg output (drm.debug=0x06, kernel=3.12-final)

Oh right, the bugfix in there needs to be replicated for hsw. Sorry for being dense, I'll work on a patch asap.

Created attachment 89315 [details] [review]
replicate edp bpp hack for hsw

Please test this patch on latest drm-intel-nightly, thanks.

(In reply to comment #26)
> Created attachment 89315 [details] [review] [review]
> replicate edp bpp hack for hsw
> 
> Please test this patch on latest drm-intel-nightly, thanks.

Yes, that patch works fine. Thank you very much.

commit 1021442098ee9328fdd4d113d63a3a7f2f40c37b
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Mon Nov 18 07:38:16 2013 +0100

    drm/i915: Replicate BIOS eDP bpp clamping hack for hsw

*** Bug 73567 has been marked as a duplicate of this bug. ***