From mboxrd@z Thu Jan 1 00:00:00 1970 From: Johannes Stezenbach Subject: Re: [2/6] 2.6.21-rc2: known regressions Date: Fri, 9 Mar 2007 18:48:21 +0100 Message-ID: <20070309174821.GA31754@linuxtv.org> References: <20070305015034.GG3441@stusta.de> <20070308123143.GF5149@mellanox.co.il> <20070308192554.GA2999@elte.hu> <20070308230705.GA4611@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.osdl.org Errors-To: linux-pm-bounces@lists.osdl.org To: Linus Torvalds Cc: Ash Milsted , dmitry.torokhov@gmail.com, Arkadiusz Miskiewicz , linux-pm@lists.osdl.org, Jens Axboe , linux-input@atrey.karlin.mff.cuni.cz, Alexey Starikovskiy , Andrew Morton , linux-usb-devel@lists.sourceforge.net, Jeff Chua , Meelis Roos , Janosch Machowinski , Linux Kernel Mailing List , Adrian Bunk , linux-acpi@vger.kernel.org, "Eric W. Biederman" , Thomas Meyer , "Michael S. Tsirkin" , Ingo Molnar List-Id: linux-input@vger.kernel.org On Thu, Mar 08, 2007, Linus Torvalds wrote: > On Fri, 9 Mar 2007, Ingo Molnar wrote: > > = > > disabling the following radeonfb options in the .config made resume wor= k = > > again: > = > In general, don't even *try* to use radeonfb for suspend/resume. > = > I don't think it has ever worked, except on some very rare laptops = > (largely PPC Macs) where people had enough information to set up the = > PLL's. > = > I don't think the other framebuffer drivers are much better. > = > You're better off using the VGA console, and lettign X re-initialize the = > graphics device. That generally at least has a reasonably good chance of = > working. > = > Re-initializing graphics modes really is very hard. You can try with the = > BIOS video hack (I forget the kernel command line to turn it on), but we = > really do end up depending on X doing it better. acpi_sleep=3Ds3_bios has always worked for me on my ThinkPad T42p. Even if one doesn't use the fb console at all, radeonfb apparently is still required on some ThinkPad models to work around BIOS bugs: http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep#R= adeon_GPU_not_powered_off Johannes