Re: Skylake / (EE) modeset(0): present flip failed loop

[Marc MERLIN <marc@merlins.org>]

I'll try a more basic question: am I supposed not to use the modesetting
driver if I want a working setup?
While debian seems to default to/kind of force the use of the modesetting
driver, if you confirm I shouldn't be using it, I can look at how to switch
away from it.

Thanks,
Marc

On Mon, Jul 10, 2017 at 09:21:46AM -0700, Marc MERLIN wrote:
> On Fri, Jul 07, 2017 at 10:26:30AM -0700, Marc MERLIN wrote:
> > On Fri, Jul 07, 2017 at 11:47:25AM +0100, Chris Wilson wrote:
> > > Quoting Marc MERLIN (2017-07-07 06:40:51)
> > > > Is this the right place to send this?
> > > > Can anyone help?
> > > > 
> > > > On Wed, Jul 05, 2017 at 11:33:01PM -0700, Marc MERLIN wrote:
> > > > > Howdy,
> > > > > 
> > > > > I have a thinkpad P70 with debian testing and 4.11.6 kernel.
> > > > > A recent-ish upgrade broke something and now I'm getting loads of spam
> > > > > in my Xorg.log
> > > > > 
> > > > > [  5031.435] (WW) modeset(0): flip queue failed: Invalid argument
> > > > > [  5031.435] (WW) modeset(0): Page flip failed: Invalid argument
> > > > > [  5031.435] (EE) modeset(0): present flip failed
> > > > > [  5031.519] (WW) modeset(0): flip queue failed: Invalid argument
> > > > > [  5031.519] (WW) modeset(0): Page flip failed: Invalid argument
> > > > > [  5031.519] (EE) modeset(0): present flip failed
> > > > > (...)
> > > > > 
> > > > > system info:
> > > > > ii  libdrm-intel1:amd64        2.4.74-1               
> > > > > ii  xserver-xorg-core          2:1.19.2-1              
> > > > > ii  xserver-xorg-video-intel   2:2.99.917+git20161206-1
> > > 
> > > If you were indeed using -intel then I would be more concerned.
> >  
> > Thanks for the reply.
> > Sorry, I'm not quite parsing what you wrote here. Are you saying that I
> > should be disable the modesetting driver?
> > To be honest, I didn't actually choose it, it seems that Debian forced
> > the switch to it.
> > 
> > xserver-xorg-video-intel (2:2.13.0-2) unstable; urgency=low
> > 
> >   * Starting from 2.10, the Intel X driver depends on a kernel driver for
> >     mode setting (that's called KMS). The corresponding kernel option is
> >     CONFIG_DRM_I915, and is enabled in Debian kernels.
> >   * To enable KMS, either of those should be sufficient:
> >      + /etc/modprobe.d/i915-kms.conf should contain:
> >          options i915 modeset=1
> > 
> > If so, how do you recommend I switch back if that's what you meant I should do?
> > 
> > > But at the very least you need to dig into dmesg (with drm.debug=fe) to
> > > find out why it failed. (One way is to run -intel with debugging enabled
> > > so that it includes the kernel error messages along with the failure
> > > message.)
> > 
> > Sounds like I need to switch drivers?
> > Right now I have no xorg.conf and it just autodetects/sets the KMS driver.
> > Sorry if I'm kind of a NOOB here, but if you give me a short pointer to 
> > how you'd like me to switch, I'll happily do so.
> 
> Can someone give me a hint what I should do next?
> Things are starting to become a problem, not counting performance which is
> far from good:
> saruman:/tmp$ du -sh /var/log/Xorg.0.log
> 1.1G	/var/log/Xorg.0.log
> 
> Marc
> -- 
> "A mouse is a device used to point at the xterm you want to type in" - A.S.R.
> Microsoft is to operating systems ....
>                                       .... what McDonalds is to gourmet cooking
> Home page: http://marc.merlins.org/  
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-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/  
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