Date: Tue, 29 Nov 2011 08:42:12 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-acpi@freebsd.org Cc: Sebastian Chmielewski <chmiels@o2.pl> Subject: Re: Suspend and resume on Dell E6520 Message-ID: <201111290842.12242.jhb@freebsd.org> In-Reply-To: <201111281215.28846.jkim@FreeBSD.org> References: <20111024184736.077bfc1b@o2.pl> <20111124073309.6771db36@o2.pl> <201111281215.28846.jkim@FreeBSD.org>
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On Monday, November 28, 2011 12:15:25 pm Jung-uk Kim wrote: > On Thursday 24 November 2011 01:33 am, Sebastian Chmielewski wrote: > > On Wed, 23 Nov 2011 20:50:58 -0500 > > > > Jung-uk Kim <jkim@FreeBSD.org> wrote: > > > Usually, we cannot resume console on NVIDIA graphics, which often > > > times lack or has incomplete VBE save/restore state function. > > > > I had kldunload nvidia in rc.suspend. Isn't that enough? > > No, it doesn't (can't) save/restore GPU state. In fact, nvidia.ko may > help when you are suspending from X11. At least in theory, it should > be able to save/restore GPU state correctly. However, a NVIDIA > engineer once told me that the code path wasn't tested well because > he couldn't find a right laptop to test at the time. It was long > ago, though. Yes, the nvidia folks would probably work on fixing suspend and resume of nvidia GPUs if we could point them at a laptop for which suspend and resume otherwise worked. -- John Baldwin
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