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[116.206.28.58]) by smtp.gmail.com with ESMTPSA id f16-20020a17090a639000b0024e05b7ba8bsm155799pjj.25.2023.05.16.17.01.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 May 2023 17:01:45 -0700 (PDT) Received: by debian.me (Postfix, from userid 1000) id 8AAD8106276; Wed, 17 May 2023 06:51:45 +0700 (WIB) Date: Wed, 17 May 2023 06:51:44 +0700 From: Bagas Sanjaya To: =?utf-8?B?w4lyaWM=?= Brunet , stable@vger.kernel.org Cc: regressions@lists.linux.dev, ville.syrjala@linux.intel.com, jouni.hogander@intel.com, jani.nikula@intel.com, gregkh@linuxfoundation.org Subject: Re: Regression on drm/i915, with bisected commit Message-ID: References: <3236901.44csPzL39Z@skaro> Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="HFKyM4/krgFaudN0" Content-Disposition: inline In-Reply-To: <3236901.44csPzL39Z@skaro> --HFKyM4/krgFaudN0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, May 16, 2023 at 03:04:53PM +0200, =C3=89ric Brunet wrote: > Hello all, >=20 > I have a HP Elite x360 1049 G9 2-in-1 notebook running fedora 38 with an = Adler=20 > Lake intel video card. >=20 > After upgrading to kernel 6.2.13 (as packaged by fedora), I started seein= g=20 > severe video glitches made of random pixels in a vertical band occupying = about=20 > 20% of my screen, on the right. The glitches would happen both with X.org= and=20 > wayland. >=20 > I checked that vanilla 6.2.12 does not have the bug and that both vanilla= =20 > 6.2.13 and vanilla 6.3.2 do have the bug. >=20 > I bisected the problem to commit e2b789bc3dc34edc87ffb85634967d24ed351acb= (it=20 > is a one-liner reproduced at the end of this message). >=20 > I checked that vanilla 6.3.2 with this commit reverted does not have the = bug. >=20 Can you also check that its mainline counterpart (e1c71f8f918047c) also exhibits this regression? > I am CC-ing every e-mail appearing in this commit , I hope this is ok, an= d I=20 > apologize if it is not. >=20 > I have filled a fedora bug report about this, see https://bugzilla.redhat= =2Ecom/ > show_bug.cgi?id=3D2203549 . You will find there a small video (made with = fedora=20 > kernel 2.6.14) demonstrating the issue. >=20 > Some more details: >=20 > % sudo lspci -vk -s 00:02.0 > 00:02.0 VGA compatible controller: Intel Corporation Alder Lake-UP3 GT2 [= Iris=20 > Xe Graphics] (rev 0c) (prog-if 00 [VGA controller]) > DeviceName: Onboard IGD > Subsystem: Hewlett-Packard Company Device 896d > Flags: bus master, fast devsel, latency 0, IRQ 143 > Memory at 603c000000 (64-bit, non-prefetchable) [size=3D16M] > Memory at 4000000000 (64-bit, prefetchable) [size=3D256M] > I/O ports at 3000 [size=3D64] > Expansion ROM at 000c0000 [virtual] [disabled] [size=3D128K] > Capabilities: [40] Vendor Specific Information: Len=3D0c > Capabilities: [70] Express Root Complex Integrated Endpoint, MSI = 00 > Capabilities: [ac] MSI: Enable+ Count=3D1/1 Maskable+ 64bit- > Capabilities: [d0] Power Management version 2 > Capabilities: [100] Process Address Space ID (PASID) > Capabilities: [200] Address Translation Service (ATS) > Capabilities: [300] Page Request Interface (PRI) > Capabilities: [320] Single Root I/O Virtualization (SR-IOV) > Kernel driver in use: i915 > Kernel modules: i915 >=20 > Relevant kernel boot messages: (appart from timestamps, these lines are= =20 > identical for 6.2.12 and 6.2.14): >=20 > [ 2.790043] i915 0000:00:02.0: vgaarb: deactivate vga console > [ 2.790089] i915 0000:00:02.0: [drm] Using Transparent Hugepages > [ 2.790497] i915 0000:00:02.0: vgaarb: changed VGA decodes:=20 > olddecodes=3Dio+mem,decodes=3Dio+mem:owns=3Dio+mem > [ 2.793812] i915 0000:00:02.0: [drm] Finished loading DMC firmware i91= 5/ > adlp_dmc_ver2_16.bin (v2.16) > [ 2.825058] i915 0000:00:02.0: [drm] GuC firmware i915/adlp_guc_70.bin= =20 > version 70.5.1 > [ 2.825061] i915 0000:00:02.0: [drm] HuC firmware i915/tgl_huc.bin ver= sion=20 > 7.9.3 > [ 2.842906] i915 0000:00:02.0: [drm] HuC authenticated > [ 2.843778] i915 0000:00:02.0: [drm] GuC submission enabled > [ 2.843779] i915 0000:00:02.0: [drm] GuC SLPC enabled > [ 2.844200] i915 0000:00:02.0: [drm] GuC RC: enabled > [ 2.845010] i915 0000:00:02.0: [drm] Protected Xe Path (PXP) protected= =20 > content support initialized > [ 3.964766] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on = minor=20 > 1 > [ 3.968403] ACPI: video: Video Device [GFX0] (multi-head: yes rom: no= =20 > post: no) > [ 3.968981] input: Video Bus as /devices/LNXSYSTM:00/LNXSYBUS:00/ > PNP0A08:00/LNXVIDEO:00/input/input18 > [ 3.977892] fbcon: i915drmfb (fb0) is primary device > [ 3.977899] fbcon: Deferring console take-over > [ 3.977904] i915 0000:00:02.0: [drm] fb0: i915drmfb frame buffer device > [ 4.026120] i915 0000:00:02.0: [drm] Selective fetch area calculation= =20 > failed in pipe A >=20 > Is there anything else I should provide? I am willing to run some tests, = of=20 > course. >=20 Anyway, thanks for regression report. I'm adding it to regzbot: #regzbot ^introduced: e2b789bc3dc34ed #regzbot title: Selective fetch area calculation regression on Alder Lake c= ard #regzbot link: https://bugzilla.redhat.com/show_bug.cgi?id=3D2203549=20 --=20 An old man doll... just what I always wanted! - Clara --HFKyM4/krgFaudN0 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQSSYQ6Cy7oyFNCHrUH2uYlJVVFOowUCZGQW8gAKCRD2uYlJVVFO o0QOAP9TVNQlBvdgVZXIh9qkfSGA8RwR00iXEI1eFRGhRQnHLwD/avkAe86hUON1 +4UycDzIB/3oS1jb4+t2cQx1992UQgI= =GU6k -----END PGP SIGNATURE----- --HFKyM4/krgFaudN0--