[Bug 101771] MacBook Pro 2015 11,5 - Xorg fatal error on screen detection for kernels 4.10.0+ (and possibly 4.9.8+)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101771

berg <berglh at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |NOTABUG

--- Comment #11 from berg <berglh at gmail.com> ---
(In reply to Michel Dänzer from comment #10)
> > Jul 13 10:51:28 bmbp kernel: [    2.011562] si_fw: mixing new and old firmware!
> 
> Looks like there's a problem with the firmware files for the radeon driver.
> Make sure the firmware-amd-graphics / firmware-linux-nonfree package is up
> to date and that the initrd contains the current files from
> /lib/firmware/radeon/.

Hi Michel,

So, in Ubuntu 16.10 there's no firmware-amd-graphics or firmware-linux-nonfree
packages anymore. 

I did however, find that the linux-firmware package on the LiveUSB key was
indeed newer, so I went ahead and downloaded this package to match that on the
live USB key: https://packages.ubuntu.com/source/zesty/linux-firmware which
incidentally updates all the initrd images.

Since updating to the newer package version the kernel started booting
correctly. I guess the morale of the story here is that I should update my
distribution to avoid this kind of problem. I had issues upgrading the same
distribution on another laptop so have been putting it off.

The latest mainline kernel 4.12.2 is now booting successfully.

Many thanks for your help, seems like testing kernel patches on new kernels is
what is getting me into trouble in this case :)

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