Hi, On Tuesday 24 September 2013 08:55:19 VDR User wrote: > On Tue, Sep 24, 2013 at 4:34 AM, Laurent Pinchart wrote: > > I've discussed this issue during LPC last week, and I still believe we > > should enable auto-suspend. The feature really saves power, without it my > > C910 Logitech webcam gets hot even when unused. > > > > If we disable auto-suspend by default and enable it from userspace only a > > handful of devices will get auto-suspended. Unless we can get distros to > > automatically test auto-suspend on unknown webcam models and report the > > results to update a central data base (which would grow much bigger than a > > quirks list in the driver in my opinion), disabling auto-suspend would be > > a serious regression. > > Setting defaults which knowingly cause problems is a horrible idea. Just > because it works for you and your setup is no justification to force it upon > everyone. This is certainly a feature that, if wanted, can be enabled by the > user. It's not just my setup, auto-suspend works for the vast majority of webcams. It has been enabled three years ago, with a report that Fedora had enabled it by carrying a kernel patch for a while, without any user complaint. > I don't see any reasonable argument against letting the user enable it if > he/she wants it. USB autosuspend is an important power saving feature. I would be fine with enabling it in userspace if we could find a reasonable, cross-distro way to create, maintain and distribute the list of devices that support USB autosuspend properly. -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
