[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

            Bug ID: 101029
           Summary: notebook does not work when not booted using nomodeset
                    AMD APU
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: stein12c@gmail.com

in kernel 4.10 and higher unable to boot without enabling nomodeset option
which also removes 3D acceleration for AMD APU processors with hybrid graphics.

See the following link for full detail on the bug:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1683184

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

Craig <stein12c@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |https://bugs.launchpad.net/
                   |                            |ubuntu/+source/linux/+bug/1
                   |                            |683184

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #1 from Michel Dänzer <michel@daenzer.net> ---
Please attach the dmesg output corresponding to the problem here directly.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

Craig <stein12c@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |stein12c@gmail.com

--- Comment #2 from Craig <stein12c@gmail.com> ---
Created attachment 131361
  --> https://bugs.freedesktop.org/attachment.cgi?id=131361&action=edit
CurrentDMesg

attached dmesg from another user with the same bug

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #131361|0                           |1
        is obsolete|                            |

--- Comment #3 from Michel Dänzer <michel@daenzer.net> ---
Comment on attachment 131361
  --> https://bugs.freedesktop.org/attachment.cgi?id=131361
CurrentDMesg

This dmesg is with nomodeset, so it doesn't contain any information related to
the problem.

Please attach the dmesg output from an attempt without nomodeset.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #4 from Craig <stein12c@gmail.com> ---
(In reply to Michel Dänzer from comment #3)
> Comment on attachment 131361 [details]
> CurrentDMesg
> 
> This dmesg is with nomodeset, so it doesn't contain any information related
> to the problem.
> 
> Please attach the dmesg output from an attempt without nomodeset.

I am not sure how to get a dmesg out of it.  Does Dmesg log to a file
somewhere?  I can't boot into the OS and output anything to text file as it
just provides a "AMD-Vi: Completion-Wait loop timed out" and a bunch of disk
checks that kept failing never allowing me to logon.  I left it for 8-9 hours
and i was still unable to do anything with the system other than a
Ctrl-Alt-SysRq REISUB.

Please let me know how to proceed.

thanks

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
(In reply to Craig from comment #4)
> Does Dmesg log to a file somewhere?

Depending on your distro, it might be captured in /var/log/kern.log*,
/var/log/dmesg*, or in the systemd journal.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #6 from Craig <stein12c@gmail.com> ---
Created attachment 131377
  --> https://bugs.freedesktop.org/attachment.cgi?id=131377&action=edit
Bootup Screenshot

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #7 from Craig <stein12c@gmail.com> ---
(In reply to Craig from comment #6)
> Created attachment 131377 [details]
> Bootup Screenshot

I am running Ubuntu 17.04. Anyways I have checked through the logs (kern.log,
syslog  and it appears that the last time it recorded anything in them was when
I was using "nomodeset" on bootup.  I have attached screenshots of what I get
when I boot up without nomodeset as a parameter.  Is it possible that it is not
writing to disk when I bootup without "nomodeset"? There is no dmesg log in the
/var/log folder. It appears that I could use journalctl -b but that only works
if I am able to boot into the system or the dmesg command but also needs to be
able to boot into it to run that.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #8 from Craig <stein12c@gmail.com> ---
Created attachment 131378
  --> https://bugs.freedesktop.org/attachment.cgi?id=131378&action=edit
Bootup Screenshot 2

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 306 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #9 from Craig <stein12c@gmail.com> ---
Created attachment 131379
  --> https://bugs.freedesktop.org/attachment.cgi?id=131379&action=edit
Bootup Screenshot 3

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #10 from Michel Dänzer <michel@daenzer.net> ---
Okay, I guess we need to try another trick: Boot with

 modprobe.blacklist=amdgpu

on the kernel command line to prevent the amdgpu module from being loaded
automatically. Once the system is booted up, manually run

 sudo modprobe amdgpu

This should increase the chance of capturing the dmesg output somewhere.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #11 from Craig <stein12c@gmail.com> ---
ok I added the modprobe.blacklist=amdgpu to the kernel command line, wouldnt
boot until I also added modprobe.blacklist=radeon. Anyways once I was in I did
run sudo modprobe amdgpu and got the usual "AMD-Vi: Completion-Wait loop timed
out" amongst other errors.  It did log some strange things in kern.log and
syslog. I also ran dmesg -k >/home/craig/DMESG.txt and it created a file with
nothing in it. I will attach the kern.log and syslog... not sure if that helps,
as you can see i am very new at doing this kind of thing.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #12 from Craig <stein12c@gmail.com> ---
Created attachment 131380
  --> https://bugs.freedesktop.org/attachment.cgi?id=131380&action=edit
Syslog

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #13 from Craig <stein12c@gmail.com> ---
Created attachment 131381
  --> https://bugs.freedesktop.org/attachment.cgi?id=131381&action=edit
Kernel Log

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

Michel Dänzer <michel@daenzer.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 Attachment #131381|text/x-log                  |text/plain
          mime type|                            |

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #14 from Michel Dänzer <michel@daenzer.net> ---
Looks like https://patchwork.freedesktop.org/patch/146519/ might help, or
passing iommu=soft on the kernel command line might serve as a workaround.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #15 from Craig <stein12c@gmail.com> ---
where do i find the amd_iommu.c in ubuntu 17.04 so that I can patch it? or is
there a different method? I was considering using this syntax: patch -p[num] <
patchfile
patch [options] originalfile patchfile
thanks very much

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #16 from Craig <stein12c@gmail.com> ---
(In reply to Craig from comment #15)
> where do i find the amd_iommu.c in ubuntu 17.04 so that I can patch it? or
> is there a different method? I was considering using this syntax: patch
> -p[num] < patchfile
> patch [options] originalfile patchfile
> thanks very much

please disregard this i believe i found a solution.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #17 from Craig <stein12c@gmail.com> ---
I can't seem to find the amd_iommu.c file, would you be able to point me to
where it is? also what would be the proper syntax to run the patch program?  it
seems to indicate -p or --strip but i am to sure what number to enter after it.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #18 from Michel Dänzer <michel@daenzer.net> ---
-p1 should work in the top level directory of a Linux kernel source tree.

Have you confirmed that iommu=soft on the kernel command line works around the
problem?

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #19 from Craig <stein12c@gmail.com> ---
using iommu=soft on the kernel command line and it is now hard freezing.  I
will try and get the patch applied next.  I can't Ctrl-Alt-Del or
Ctrl-Alt-SysRq-REISUB to reboot.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #20 from Craig <stein12c@gmail.com> ---
ok when i type the following it is unable to find the file to patch:

sudo patch -p1 < iommu-amd-flush-IOTLB-for-specific-domains-only.patch

It displays the following:

can't find file to patch at input line 5
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
___________________________________
|diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
|index 98940d1..6a9a048 100644
|--- a/drivers/iommu/amd_iommu.c
|+++ b/drivers/iommu/amd_iommu
___________________________________

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #21 from Jan Vesely <jan.vesely@rutgers.edu> ---
I have the same problem on carrizo+iceland nb (reported at [0,1]).

I can confirm that the linked patch applied on top of 4.10.x fixes boot, and
the machine can run 3d applications (tested glxgears) on both GPUs (running 3d
apps on dGPU still causes null pointer dereference when the card goes back to
suspend, but that's a separate issue).
it also fixes the boot hang problem on ROCK[1]

[0]https://bugzilla.redhat.com/show_bug.cgi?id=1448121
[1]https://github.com/RadeonOpenCompute/ROCK-Kernel-Driver/issues/20

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #22 from Craig <stein12c@gmail.com> ---
in that case, when will this patch be applied permanently in a kernel versus
having to use the patch?  I will be attempting to apply the patch soon and
verify as well on the Ubuntu side.

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #23 from Craig <stein12c@gmail.com> ---
I can now confirm that the kernel patch fixes my problem.  How can I keep in
the loop as to when this is applied in the kernel? very eager to see this make
its way in so that I can upgrade my kernel without having to patch and compile
one on my own.

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #24 from Michel Dänzer <michel@daenzer.net> ---
You can follow the review of the latest patch revision at
https://patchwork.freedesktop.org/patch/157327/

We will resolve this bug report when the fix has landed in Linus' tree.

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

--- Comment #25 from Julien Isorce <julien.isorce@gmail.com> ---
Does the patch mentioned in comment 24 only allow '__queue_flush' to complete
faster at boot time ? Or should we expect some performance gain after boot ?

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[Bug 101029] notebook does not work when not booted using nomodeset AMD APU

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=101029

Martin Peres <martin.peres@free.fr> changed:

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

--- Comment #26 from Martin Peres <martin.peres@free.fr> ---
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