From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Subject: Re: Linux Kernel 5.2.8 (uvc or i915? <<<) Date: Fri, 16 Aug 2019 12:58:45 +0300 Message-ID: <20190816095845.GC5020@pendragon.ideasonboard.com> References: <5d637638-12d1-6c39-8f76-824a0e875feb@infradead.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Return-path: Content-Disposition: inline In-Reply-To: <5d637638-12d1-6c39-8f76-824a0e875feb@infradead.org> Sender: linux-kernel-owner@vger.kernel.org To: Randy Dunlap Cc: Nathaniel Russell , LKML , linux-media , dri-devel , intel-gfx List-Id: intel-gfx@lists.freedesktop.org Hi Randy, On Thu, Aug 15, 2019 at 08:10:03PM -0700, Randy Dunlap wrote: > [adding mailing lists etc. with Nathaniel's test info] > > On 8/15/19 7:21 PM, Nathaniel Russell wrote: > > Well i surpressed the uvcvideo driver and you are right Randy it > > definitely is not the uvcvideo driver. There is something going on in > > the i915 driver. > > > > On 8/15/19, Randy Dunlap wrote: > >> On 8/15/19 6:15 PM, Nathaniel Russell wrote: > >>> I would really like help with the kernel error with my uvcvideo driver. > >> > >> Hi again. > >> > >> What makes you think that the problem is related to the uvcvideo driver? > >> Does some previous kernel version work correctly? If so, what version(s)? > >> > >> > >> Does this warning message only happen when the uvcvideo driver is being > >> loaded? > >> Can you suppress loading of the uvcvideo driver to find out? > >> > >> Most of the problems/errors/warnings that I see are related to the i915 > >> driver: > >> > >> [ 13.032341] timed out waiting for port C ready: got 0x20, expected 0xe0 > >> [ 13.032872] WARNING: CPU: 1 PID: 239 at > >> drivers/gpu/drm/i915/intel_display.c:1597 vlv_wait_port_ready+0x99/0xe0 > >> [i915] > >> [ 13.033632] RIP: 0010:vlv_wait_port_ready+0x99/0xe0 [i915] > >> > >> although there are a few uvcvideo warnings: > >> [ 13.039305] uvcvideo 1-5:1.0: Entity type for entity Extension 4 was not > >> initialized! > >> [ 13.039318] uvcvideo 1-5:1.0: Entity type for entity Extension 3 was not > >> initialized! > >> [ 13.039330] uvcvideo 1-5:1.0: Entity type for entity Processing 2 was not > >> initialized! > >> [ 13.039339] uvcvideo 1-5:1.0: Entity type for entity Camera 1 was not > >> initialized! > >> > >> Laurent, do you see any uvc issues here? Any ideas/suggestions? No, uvcvideo seems completely reunlated. > >> @intel-gfx: any ideas about what is going on here with the i915 driver? > >> > >> Original message to lkml: > >> https://lore.kernel.org/lkml/CAONH+Jm-O6=DQ+K2n5pNTNMg2Sq1KcVNFLuweVh6W82OPEFJoQ@mail.gmail.com/T/#u > >> > >> Previous message for 5.1.21 kernel: > >> https://lore.kernel.org/lkml/CAONH+JkTFujY9vEyNNuem+9rJ2qBKkf-PbKk9=DBSVEp6kW=yw@mail.gmail.com/ -- Regards, Laurent Pinchart