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 706602EA164; Wed, 22 Oct 2025 05:28:53 +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=1761110934; cv=none; b=ZJumkD2y/U41KOagd1uRvJNwZdU2YiZRmyqIDlRQNlKFYjulWWbJE2JMHI43RCUUN/K/FiVsghTqp21ZumW1PLA2SeT6eLxj0IhLYFflu1xL3Eqo3uJWmdN1xJEWWkZ5QEOOjD5aBxugDXyoM2fIRkNs0FhBrbHREFNn9M2mC4Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761110934; c=relaxed/simple; bh=3Ff1ASD4+Th70oO4lsVjO5rTjRYPN1ABVSR9uE5fR7g=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=lvkI8+vSmN//1upA8qrYekaaOqwbq2DmBk6XTPE9Qn0acHparb/zl/8vxBqbDB5lz58DOYR+R2wqJ7D6T250cASaF7mHe9I0pqYl9n0rPxDbqJ9tyz0C8ebvHW/ghcpru0NBmWl+vslmrhypN50HQlByZPMYc+MS7n2HFxDgMqU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=FM14vIVZ; 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="FM14vIVZ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8B0A7C4CEE7; Wed, 22 Oct 2025 05:28:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1761110933; bh=3Ff1ASD4+Th70oO4lsVjO5rTjRYPN1ABVSR9uE5fR7g=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=FM14vIVZxOjSYglNeWLtEEHC/JxTP6WKADZiXeEpooRHBfSgLL7xWxg3sOb153DAq 2pZWBHKtdv9BrP51l3fR4tZ1vO+Uln8WBZL+cRDwi9j43/9iL+LN4DoRCxeXHEQ8Td m9xJk81/wmEAOKIg9POnRuKi5sA0uGkVQlCKJfzA= Date: Wed, 22 Oct 2025 07:28:50 +0200 From: Greg Kroah-Hartman To: Thorsten Leemhuis 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 6.17 040/159] drm/ast: Blank with VGACR17 sync enable, always clear VGACRB6 sync off Message-ID: <2025102235-pediatric-sandlot-f2de@gregkh> References: <20251021195043.182511864@linuxfoundation.org> <20251021195044.163217433@linuxfoundation.org> <499eb508-5f24-4ef4-a2a3-f3d76d89db66@leemhuis.info> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <499eb508-5f24-4ef4-a2a3-f3d76d89db66@leemhuis.info> On Wed, Oct 22, 2025 at 06:49:21AM +0200, Thorsten Leemhuis wrote: > On 10/21/25 21:50, Greg Kroah-Hartman wrote: > > 6.17-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. > > TWIMC, a regression report about 6.18-rc2 that was bisected to this > commit just came in: > > https://lore.kernel.org/all/a40caf8e-58ad-4f9c-af7f-54f6f69c29bb@googlemail.com/ > > To quote: > > """ > I have encountered a serious (for me) regression with 6.18-rc2 on my > 2-socket Ivy Bridge Xeon E5-2697 v2 server. After > booting, my console screen goes blank and stays blank. 6.18-rc1 was > still fine. > > [...] > > When I revert this from 6.18-rc2, the issue goes away and my console > screen works again. > """ Thanks, I'll go drop this patch from the stable queues for now. greg k-h