From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.molgen.mpg.de (mx3.molgen.mpg.de [141.14.17.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5E84E20E3 for ; Fri, 16 Dec 2022 11:58:53 +0000 (UTC) Received: from [141.14.220.45] (g45.guest.molgen.mpg.de [141.14.220.45]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: pmenzel) by mx.molgen.mpg.de (Postfix) with ESMTPSA id BC6BF61CCD7B0; Fri, 16 Dec 2022 12:58:44 +0100 (CET) Message-ID: Date: Fri, 16 Dec 2022 12:58:44 +0100 Precedence: bulk X-Mailing-List: regressions@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 Subject: Re: matroxfb: cannot determine memory size To: Helge Deller Cc: "Z. Liu" , linux-fbdev@vger.kernel.org, it+linux-fbdev@molgen.mpg.de, regressions@lists.linux.dev, stable@vger.kernel.org References: <5da53ec5-3a9c-ec87-da20-69f140aaaa6b@molgen.mpg.de> <6ef71be5-def9-4578-3f73-c43c35d7e4a9@gmx.de> Content-Language: en-US From: Paul Menzel In-Reply-To: <6ef71be5-def9-4578-3f73-c43c35d7e4a9@gmx.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit [Cc: +regressions@, +stable@] #regzbot ^introduced: 62d89a7d49afe46e6b9bbe9e23b004ad848dbde4 Dear Helge, Thank you for your prompt reply. Am 16.12.22 um 00:02 schrieb Helge Deller: > On 12/15/22 17:39, Paul Menzel wrote: >> Between Linux 5.10.103 and 5.10.110/5.15.77, matrixfb fails to load. >> >> ## Working: >> >>      [    0.000000] Linux version 5.10.103.mx64.429 (root@theinternet.molgen.mpg.de) (gcc (GCC) 7.5.0, GNU ld (GNU Binutils) 2.37) #1 SMP Mon Mar 7 16:41:58 CET 2022 >>      [    0.000000] Command line: BOOT_IMAGE=/boot/bzImage-5.10.103.mx64.429 root=LABEL=root ro crashkernel=64G-:256M console=ttyS0,115200n8 console=tty0 init=/bin/systemd audit=0 random.trust_cpu=on systemd.unified_cgroup_hierarchy >>      […] >>      [    0.000000] DMI: Dell Inc. PowerEdge R910/0KYD3D, BIOS 2.10.0 08/29/2013 >>      […] >>      [   48.045530] matroxfb: Matrox MGA-G200eW (PCI) detected >>      [   48.054675] matroxfb: 640x480x8bpp (virtual: 640x13107) >>      [   48.059966] matroxfb: framebuffer at 0xC5000000, mapped to 0x00000000ca7238fa, size 8388608 >> >> ## Non-working: >> >> ### 5.10.110 >> >>      [    0.000000] Linux version 5.10.110.mx64.433 (root@theinternet.molgen.mpg.de) (gcc (GCC) 7.5.0, GNU ld (GNU >> Binutils) 2.37) #1 SMP Thu Apr 14 15:28:53 CEST 2022 >>      [    0.000000] Command line: root=LABEL=root ro crashkernel=64G-:256M console=ttyS0,115200n8 console=tty0 init=/bin/systemd audit=0 random.trust_cpu=on systemd.unified_cgroup_hierarchy >>      […] >>      [    0.000000] DMI: Dell Inc. PowerEdge R910/0KYD3D, BIOS 2.10.0 08/29/2013 >>      […] >>      [   35.225987] matroxfb: Matrox MGA-G200eW (PCI) detected >>      [   35.234088] matroxfb: cannot determine memory size >>      [   35.238931] matroxfb: probe of 0000:09:03.0 failed with error -1 >> >> ### 5.15.77 >> >>      [    0.000000] Linux version 5.15.77.mx64.440 (root@theinternet.molgen.mpg.de) (gcc (GCC) 10.4.0, GNU ld (GNU Binutils) 2.37) #1 SMP Tue Nov 8 15:42:33 CET 2022 >>      [    0.000000] Command line: root=LABEL=root ro crashkernel=64G-:256M console=ttyS0,115200n8 console=tty0 init=/bin/systemd audit=0 random.trust_cpu=on systemd.unified_cgroup_hierarchy >>      […] >>      [    0.000000] DMI: Dell Inc. PowerEdge R715/0G2DP3, BIOS 1.5.2 04/19/2011 >>      […] >>      [    9.436420] matroxfb: Matrox MGA-G200eW (PCI) detected >>      [    9.444502] matroxfb: cannot determine memory size >>      [    9.449316] matroxfb: probe of 0000:0a:03.0 failed with error -1 >> >> We see it on several systems: >> >>      $ lspci -nn -s 0a:03.0 # Dell PowerEdge R715 >>      0a:03.0 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 [102b:0532] (rev 0a) >> >>      $ lspci -nn -s 09:03.0 # Dell PowerEdge R910 >>      09:03.0 VGA compatible controller [0300]: Matrox Electronics Systems Ltd. MGA G200eW WPCM450 [102b:0532] (rev 0a) >> >> I found some old log from April 2022, where I booted 5.10.109, and the >> error is not there, pointing toward the regression to be introduced >> between 5.10.109 and 5.10.110. >> >> ``` >> $ git log --oneline v5.10.109..v5.10.110 --grep fbdev […] >> ``` >> >> Is it worthwhile to test commit f8bf19f7f311 (video: fbdev: matroxfb: >> set maxvram of vbG200eW to the same as vbG200 to avoid black screen)? > > Yes, it is. > Please try and report back. > It seems to be the only relevant patch, and it fits with the name of > your card. I tested Linus’ master with commit 84e57d292203 (Merge tag 'exfat-for-6.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linkinjeon/exfat) and the error is still there. Reverting commit fixes the issue. Tested on: DMI: Dell Inc. PowerEdge R910/0KYD3D, BIOS 2.10.0 08/29/2013 Current master: [ 36.221595] matroxfb 0000:09:03.0: vgaarb: deactivate vga console [ 36.228355] Console: switching to colour dummy device 80x25 [ 36.234069] matroxfb: Matrox MGA-G200eW (PCI) detected [ 36.239316] PInS memtype = 7 [ 36.242198] matroxfb: cannot determine memory size [ 36.242209] matroxfb: probe of 0000:09:03.0 failed with error -1 After reverting 62d89a7d49af (video: fbdev: matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen): [ 38.140763] matroxfb 0000:09:03.0: vgaarb: deactivate vga console [ 38.148057] Console: switching to colour dummy device 80x25 [ 38.153789] matroxfb: Matrox MGA-G200eW (PCI) detected [ 38.159042] PInS memtype = 7 [ 38.161953] matroxfb: 640x480x8bpp (virtual: 640x13107) 2022-12-16T12:26:11.301999+01:00 invidia kernel: [ 38.167175] matroxfb: framebuffer at 0xC5000000, mapped to 0x000000006f41c38c, size 8388608 >> The master commit 62d89a7d49a was added to v5.18-rc1, and was also >> backported to the Linux 5.15 series in 5.15.33. Kind regards, Paul