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([2a02:a03f:be69:3200:82e8:2cff:fe51:d2c8]) by smtp.gmail.com with ESMTPSA id c186-20020a1c35c3000000b0038e6c6fc860sm2066836wma.37.2022.04.14.06.25.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 14 Apr 2022 06:25:02 -0700 (PDT) Message-ID: Date: Thu, 14 Apr 2022 15:25:01 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [Intel-gfx] commit 15512021eb3975a8c2366e3883337e252bb0eee5 causes white spots in console screens Content-Language: fr-moderne To: "Saarinen, Jani" , Jani Nikula , "Lisovskiy, Stanislav" References: <0da21aec-d299-1834-99f3-9a598e4649f7@gmail.com> <87v8vcgb63.fsf@intel.com> <20220414063139.GA31013@intel.com> <9d497fb9-4504-9e64-1d7f-9353cf96624c@gmail.com> <20220414080312.GA31389@intel.com> <1bcb195c-8c84-3641-7784-e7b7578bb40f@gmail.com> <87h76wf4lz.fsf@intel.com> From: =?UTF-8?Q?Fran=c3=a7ois_Valenduc?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Le 14/04/22 à 11:51, Saarinen, Jani a écrit : > >> -----Original Message----- >> From: Intel-gfx On Behalf Of Jani >> Nikula >> Sent: torstai 14. huhtikuuta 2022 11.32 >> To: François Valenduc ; Lisovskiy, Stanislav >> >> Cc: intel-gfx@lists.freedesktop.org; dri-devel@lists.freedesktop.org >> Subject: Re: [Intel-gfx] commit 15512021eb3975a8c2366e3883337e252bb0eee5 >> causes white spots in console screens >> >> On Thu, 14 Apr 2022, François Valenduc wrote: >>> Le 14/04/22 à 10:03, Lisovskiy, Stanislav a écrit : >>>> On Thu, Apr 14, 2022 at 08:33:35AM +0200, François Valenduc wrote: >>>>> Le 14/04/22 à 08:31, Lisovskiy, Stanislav a écrit : >>>>>> On Wed, Apr 13, 2022 at 08:12:20PM +0300, Jani Nikula wrote: >>>>>>> On Wed, 13 Apr 2022, François Valenduc >> wrote: >>>>>>>> Commit 15512021eb3975a8c2366e3883337e252bb0eee5 >>>>>>>> (15512021eb3975a8c2366e3883337e252bb0eee5) causes a lof of white >>>>>>>> spots to appears on the right upper corner of all console screens >>>>>>>> (see >> https://drive.google.com/file/d/13GabEvOIKSAj5yox6ybAZEDu3Ixncw5Q/view). >>>>>>>> git-bisect shows that this is the offending commit and if I >>>>>>>> revert it, the problem goes away. The problem still occurs with >>>>>>>> kernel 5.18-rc2 and to all stable trees where it was applied. >>>>>>>> Can somebody explains what happens ? >>>>>>>> >>>>>>>> The video card is the following: VGA compatible controller: Intel >>>>>>>> Corporation WhiskeyLake-U GT2 [UHD Graphics 620] (rev 02) >>>>>>>> (prog-if 00 [VGA controller]) >>>>>>>> >>>>>>>> Please tell me if you need more info. >>>>>>> That's commit 15512021eb39 ("drm/i915: Workaround broken BIOS DBUF >>>>>>> configuration on TGL/RKL"), adding Cc's. >>>>>>> >>>>>>> Please file a report at fdo gitlab [1] and attach dmesg etc. there. >>>>>> That commit looks like it is just disabling all the planes, if >>>>>> wrong dbuf/wm configuration is detected. >>>>>> However it should do that only once during boot as I understand. >>>>>> >>>>>> Are you sure that is exactly this commit which is causing this? >>>>>> Does the issue appear always? >>>>>> >>>>>> Ville Syrjälä, thoughts? >>>>>> >>>>>> Stan >>>>>> >>>>>>> Thanks, >>>>>>> Jani. >>>>>>> >>>>>>> >>>>>>> [1] >>>>>>> https://gitlab.freedesktop.org/drm/intel/wikis/How-to-file-i915-bu >>>>>>> gs >>>>>>> >>>>>>> >>>>>>> -- >>>>>>> Jani Nikula, Intel Open Source Graphics Center >>>>> As I said, git-bisect shows it's the offending commit and if I >>>>> revert it, the problem doesn't happens. Otherwise, it always occurs. >>>>> >>>>> François >>>>> >>>> Does it just happen all the time or some steps/certain circumstances >>>> needed for it to happen? >>>> >>>> Only suspicion after looking briefly is that once suspend/resume is >>>> done it might be messing something up. Just a quick guess.. >>>> >>>> Stan >>> It occurs permantently as soon as I boot my computer. >> I'd appreciate that bug being filed, and the discussion moved there, so all the >> details and history are in one place. > Agree. > >> Thanks, >> Jani. >> >> >> -- >> Jani Nikula, Intel Open Source Graphics Center As requested, I filled a bug on freedesktop (https://gitlab.freedesktop.org/drm/intel/-/issues/5711)