Bug#823146: linux-image-4.5.0-0.bpo.1-amd64: Kernel 4.5 fails to boot on AMD A6 APU

From	Ben Hutchings <ben@decadent.org.uk>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#823146: linux-image-4.5.0-0.bpo.1-amd64: Kernel 4.5 fails to boot on AMD A6 APU
Date	2016-05-05 00:00 +0200
Message-ID	<rvcZQ-3pD-5@gated-at.bofh.it> (permalink)
References	<rtZii-1AP-17@gated-at.bofh.it> <rurHA-113-19@gated-at.bofh.it> <ruYNc-7b5-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Cross-posted to 2 groups.

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On Wed, 2016-05-04 at 08:42 +0200, CJP wrote:
> > 
> > Of course.  It looks like we can do that by reverting the change that
> > caused this regression.  Please test whether the attached patch fixes
> > the problem, following the instructions at:
> > 
> > https://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official
> > 
> Yes, it fixes the problem, even without my modprobe.blacklist argument.
> 
> Some notes:
> 
> test-patches asked me for a flavour; I entered amd64.
> 
> When installing the linux-image package, I got this error:
> update-initramfs: Generating /boot/initrd.img-4.5.0-0.bpo.1-amd64
> W: Possible missing firmware /lib/firmware/rtl_nic/rtl8107e-2.fw for
> module r8169
> W: Possible missing firmware /lib/firmware/rtl_nic/rtl8107e-1.fw for
> module r8169
> W: Possible missing firmware /lib/firmware/rtl_nic/rtl8168h-2.fw for
> module r8169
> W: Possible missing firmware /lib/firmware/rtl_nic/rtl8168h-1.fw for
> module r8169
> I ignored it, since I probably won't need WiFi during early start-up.

These are actually for Ethernet controllers not wifi.

> When fully booted with this kernel, I tested my WiFi and it still works.
> 
> lsmod shows now that the sp5100_tco module is loaded.
> 
> dmesg contains the following line:
> [    0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.5.0-0.bpo.1-amd64
> root=UUID=cab2c5d5-4664-4105-bcbd-fcb860cc035d ro quiet
> (so it is version 4.5, without the blacklist argument)
> 
> dmesg does not show the ACPI error lines that were generated by the
> faulty 4.5.
> 
> dmesg | grep sp5100_tco returns the following:
> [   31.700531] sp5100_tco: SP5100/SB800 TCO WatchDog Timer Driver v0.05
> [   31.700640] sp5100_tco: PCI Revision ID: 0x13
> [   31.700709] sp5100_tco: failed to find MMIO address, giving up.
> 
> I hope this is what you expected. To me, it looks like the problem is
> fixed.

That looks right - the driver is now failing in a harmless way.

Thanks for testing.

Ben.

-- 
Ben Hutchings
In a hierarchy, every employee tends to rise to his level of incompetence.

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Bug#823146: linux-image-4.5.0-0.bpo.1-amd64: Kernel 4.5 fails to boot on AMD A6 APU CJP <cornwarecjp@ultimatestunts.nl> - 2016-05-01 15:10 +0200
  Processed: Re: Bug#823146: linux-image-4.5.0-0.bpo.1-amd64:  Kernel 4.5 fails to boot on AMD A6 APU owner@bugs.debian.org (Debian Bug Tracking System) - 2016-05-02 21:30 +0200
  Bug#823146: linux-image-4.5.0-0.bpo.1-amd64: Kernel 4.5 fails to boot on AMD A6 APU Ben Hutchings <ben@decadent.org.uk> - 2016-05-02 21:30 +0200
    Bug#823146: linux-image-4.5.0-0.bpo.1-amd64: Kernel 4.5 fails to boot on AMD A6 APU CJP <cornwarecjp@ultimatestunts.nl> - 2016-05-04 08:50 +0200
      Bug#823146: linux-image-4.5.0-0.bpo.1-amd64: Kernel 4.5 fails to boot on AMD A6 APU Ben Hutchings <ben@decadent.org.uk> - 2016-05-05 00:00 +0200

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