From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Subject: Re: [PATCH] backlight: Don't read back backlight setting from kernel on DPMS off Date: Fri, 13 Jun 2014 10:49:12 +0200 Message-ID: <539ABB08.4090602@redhat.com> References: <1401976118-8780-1-git-send-email-hdegoede@redhat.com> <8761kfe9qk.fsf@intel.com> <20140605142912.GB22214@nuc-i3427.alporthouse.com> <5390C031.4090500@redhat.com> <20140605202427.GC22214@nuc-i3427.alporthouse.com> <5391D230.30700@redhat.com> <20140606145127.GG22214@nuc-i3427.alporthouse.com> <5392E6FB.4020509@redhat.com> <20140607111239.GA9858@nuc-i3427.alporthouse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by gabe.freedesktop.org (Postfix) with ESMTP id 447946E9D8 for ; Fri, 13 Jun 2014 01:49:19 -0700 (PDT) In-Reply-To: <20140607111239.GA9858@nuc-i3427.alporthouse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Chris Wilson , Jani Nikula , intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org Hi, On 06/07/2014 01:12 PM, Chris Wilson wrote: > On Sat, Jun 07, 2014 at 12:18:35PM +0200, Hans de Goede wrote: >> Hi, >> >> On 06/06/2014 04:51 PM, Chris Wilson wrote: >>> commit c6cd10f536e099277cdc46643725a5a50ea8b525 >>> Author: Chris Wilson >>> Date: Thu Jun 5 22:43:37 2014 +0100 >> >> Thanks, I fail to see how this addresses the original problem though, >> current master still reads back the backlight from the kernel at DPMS >> off, so the problem my original patch in this thread tries to fix >> still exists AFAIK, we will still read back 0 on DPMS off in the >> scenario my patch tries to address. > > It changes the sequence in which output->funcs->dpms is called to > prevent the bug. Thanks, I don't see that being changed in the above commit though, and I cannot find the commit in which it does change, can you point me to the commit where this is changed ? Regards, Hans