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[91.5.120.80]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47496bf7137sm30354195e9.3.2025.10.21.22.42.14 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 21 Oct 2025 22:42:14 -0700 (PDT) Message-ID: <7015844a-7eca-469c-9115-b84183a94154@googlemail.com> Date: Wed, 22 Oct 2025 07:42:14 +0200 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Betterbird (Windows) Subject: Re: [PATCH 6.12 020/136] drm/ast: Blank with VGACR17 sync enable, always clear VGACRB6 sync off Content-Language: de-DE To: Greg Kroah-Hartman , stable@vger.kernel.org Cc: patches@lists.linux.dev, Thomas Zimmermann , Nick Bowler , Douglas Anderson , Dave Airlie , Jocelyn Falempe , dri-devel@lists.freedesktop.org References: <20251021195035.953989698@linuxfoundation.org> <20251021195036.457336682@linuxfoundation.org> From: Peter Schneider In-Reply-To: <20251021195036.457336682@linuxfoundation.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Greg, Am 21.10.2025 um 21:50 schrieb Greg Kroah-Hartman: > 6.12-stable review patch. If anyone has any objections, please let me know. > > ------------------ > > From: Thomas Zimmermann > > commit 6f719373b943a955fee6fc2012aed207b65e2854 upstream. > > Blank the display by disabling sync pulses with VGACR17<7>. Unblank > by reenabling them. This VGA setting should be supported by all Aspeed > hardware. This patch breaks VGA output on my machine. I have already reported this regression against mainline 6.18-rc2, see here: https://lore.kernel.org/all/a40caf8e-58ad-4f9c-af7f-54f6f69c29bb@googlemail.com/ When I revert this patch from 6.12.55-rc1, the issue goes away, just as in mainline. I'm still going to test 6.17.5-rc1 too and report back, but I guess it will be just the same. Beste Grüße, Peter Schneider -- Climb the mountain not to plant your flag, but to embrace the challenge, enjoy the air and behold the view. Climb it so you can see the world, not so the world can see you. -- David McCullough Jr. OpenPGP: 0xA3828BD796CCE11A8CADE8866E3A92C92C3FF244 Download: https://www.peters-netzplatz.de/download/pschneider1968_pub.asc https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@googlemail.com https://keys.mailvelope.com/pks/lookup?op=get&search=pschneider1968@gmail.com