From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 9E49D2E401; Wed, 22 Oct 2025 06:01:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761112886; cv=none; b=NrJbSY+u1qwH39YX+TOJZPp4DR/R/JlXs+8ZCZ04EE/kvlKPpBuMz2lq1ay0DMs6DAd4Yn0aTkae8TJpwd4lU45m+tYNjKrHdD6agtC5wcVDbeY6qCWYJK7aQ/kY++LMcV7ZRyuIZEezyvr45MhQGNHP7agDV9t/nlvXPIJt1kU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761112886; c=relaxed/simple; bh=ljiLlxvsuemtkUTdxR99prnOHMvm/yaLMWqYL9E2vlY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=SmwEsqttA2lGuwILvr8j8HqymCmyKKfY95McYR9j49IpUxBlVC99IWKkycTrSmvpBar2aHNggsStJ9e2AeZSnZsJAD8beIiSbYbAw4ZXd6eG6hOFprJUOzVF7vtQ0ugxh/oEAai1qif1EVxwHGVkJK/mTSNt1PFFvwH2koNU3QQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=PmoBmHf9; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="PmoBmHf9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D8E15C4CEF7; Wed, 22 Oct 2025 06:01:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761112886; bh=ljiLlxvsuemtkUTdxR99prnOHMvm/yaLMWqYL9E2vlY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=PmoBmHf9Ql6qH+pe9CemgRLWBAJhjSi/hoSABnk9ndpV+2zUxCziVK4S5Lo0Sm9Nn Bp2qAEq953xvv8w4/luZLLy4s9ZTB4p0ZKutX2m0xj1MU1xszZbt6smCVpD1tSo4pD +Qmik6bLUKZlATOg+pikO/bhM3h21XPwypLZ1APc= Date: Wed, 22 Oct 2025 08:01:14 +0200 From: Greg Kroah-Hartman To: Peter Schneider Cc: stable@vger.kernel.org, patches@lists.linux.dev, Thomas Zimmermann , Nick Bowler , Douglas Anderson , Dave Airlie , Jocelyn Falempe , dri-devel@lists.freedesktop.org Subject: Re: [PATCH 6.12 020/136] drm/ast: Blank with VGACR17 sync enable, always clear VGACRB6 sync off Message-ID: <2025102259-open-shallow-089e@gregkh> References: <20251021195035.953989698@linuxfoundation.org> <20251021195036.457336682@linuxfoundation.org> <7015844a-7eca-469c-9115-b84183a94154@googlemail.com> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7015844a-7eca-469c-9115-b84183a94154@googlemail.com> On Wed, Oct 22, 2025 at 07:42:14AM +0200, Peter Schneider wrote: > 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. Now dropped from this queue as well. I'll go push out a -rc2 to be safe. thanks, greg k-h