From: dann frazier <dannf@dannf.org>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>, intel-gfx@lists.freedesktop.org
Subject: Re: regression bisected: display sync drops after 7221fc33
Date: Tue, 26 Jan 2016 08:10:04 -0700 [thread overview]
Message-ID: <20160126151004.GD10738@fluid.dannf> (raw)
In-Reply-To: <20160126111701.GW23290@intel.com>
On Tue, Jan 26, 2016 at 01:17:01PM +0200, Ville Syrjälä wrote:
> On Mon, Jan 25, 2016 at 09:35:26AM -0700, dann frazier wrote:
> > I've got a Lenovo T410 w/ an external display (DisplayPort<->HDMI). After
> > upgrading from a 4.2 kernel to a 4.3, I started hitting an issue where
> > the display thinks it has lost input for a few moments. Oddly, it
> > usually happens when I start typing in a terminal after a short period
> > of inactivity.
> >
> > I see no OS-side symptoms - there are no new messages in dmesg/syslog/Xorg
> > log, etc.
>
> Any fifo underrun reports in dmesg in general?
Yes, several:
[ 1886.547409] [drm:ironlake_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun
> > I reproduced with latest Linus master (@ 3e1e21c7b), and then
> > bisected down to the following commit:
> >
> > commit 7221fc333dbe1743a3dff155b03527fda90d4ec1
> > Author: Matt Roper <matthew.d.roper@intel.com>
> > Date: Thu Sep 24 15:53:08 2015 -0700
> >
> > drm/i915: Eliminate usage of pipe_wm_parameters from ILK-style WM (v2)
>
> That's not in 4.3.
Ah, you're right. I was going by the version in the Makefile at that commit,
which says 4.3.0-rc3. git naiveté.
> As far as currentl Linus tree goes, you may want to try these:
> http://patchwork.freedesktop.org/patch/msgid/1452776015-22076-2-git-send-email-ville.syrjala@linux.intel.com
> http://patchwork.freedesktop.org/patch/msgid/1452776015-22076-1-git-send-email-ville.syrjala@linux.intel.com
Building - I'll test and report back.
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
next prev parent reply other threads:[~2016-01-26 15:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-25 16:35 regression bisected: display sync drops after 7221fc33 dann frazier
2016-01-26 11:17 ` Ville Syrjälä
2016-01-26 15:10 ` dann frazier [this message]
2016-01-26 16:40 ` dann frazier
2016-02-02 22:21 ` dann frazier
2016-02-02 22:51 ` Matt Roper
2016-02-03 0:35 ` dann frazier
2016-02-03 2:04 ` Matt Roper
2016-02-04 2:44 ` dann frazier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160126151004.GD10738@fluid.dannf \
--to=dannf@dannf.org \
--cc=daniel.vetter@ffwll.ch \
--cc=intel-gfx@lists.freedesktop.org \
--cc=ville.syrjala@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).