Hi Richard, I don't have a means of preventing screen blanking. My machine doesn't have windows installed on it and I don't have an easy way of seeing what acpi commands the windows code is using. Maybe some of the tools such as http://msdn.microsoft.com/en-us/windows/hardware/gg463009.aspx might provide some insight into what magic acpi call is being used to keep the screen on. -Will >________________________________ > From: Richard Hughes <hughsient@xxxxxxxxx> >To: argyllcms@xxxxxxxxxxxxx >Sent: Friday, August 24, 2012 11:31 AM >Subject: [argyllcms] Re: Lenovo ThinkPad W530 Colorimeter > >On 23 August 2012 01:26, William Cohen <giantklein@xxxxxxxxx> wrote: >> I found /sys/module/i915/parameters/panel_ignore_lid . I tried setting it to >> 1 and then activating the switch. It didn't seem to make a difference. The >> screen still blanked. > >If you find out, let me know and I'll add support for setting the >correct thing in gnome-color-manager. > >Thanks, > >Richard. > > > >