We have dedicated engineering teams working to get updates and fixes out as quickly as possible and we will continue to use our Surface Book and Surface Pro 4 support forums to share new information directly with our customers as it becomes available.' 'We know a small set of Surface Book and Surface Pro 4 customers are experiencing issues and addressing that is a top priority for us. 'We are focused on delivering a great experience to every Surface customer,' a Microsoft spokesperson told Engadget. Making things even worse, a Surface engineering manager noted earlier this month that the issue might not be fixed until 2016. That's a particularly surprising issue for flagship devices in 2015 - it's something that's mostly been fixed by laptop makers over the past decade. Instead, they continue to drain power, which could be a nasty surprise if you don't bring your charger along. Some users are reporting that the devices simply don't go to sleep properly when you close their lids or put them into standby. But they came too late to erase the idea that something was up with Microsoft's new hardware.Īnd one big issue remains for Surface Book and Surface Pro 4 owners: erratic power management. Those concerns prompted Microsoft to release several firmware and software updates within weeks (on top of a launch day fix), which helped with some issues. Some early buyers reported a variety of issues, including screen flickering, system instability and power problems. But things changed once they actually reached consumers. We liked both devices, and while the Surface Book wasn't everyone's cup of tea, most reviews were also fairly positive.

When reviews of the Surface Book and Surface Pro 4 hit, it seemed like Microsoft would be riding a wave of positive publicity into the holiday season.

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