Intel confirms Haswell chipset USB bug
In a Product Change Notification bulletin from Intel confirmed that the current Lynx Point 8-series and C220 chipsets for Haswell have a bug that causes USB 3.0 devices to disappear after entering S3 standby mode. The issue has been fixed in stepping C2, this updated chipset will start sampling on April 19th but won't hit the market until late July.
Affected chipsets include the Q87, Q85, H87, Z87, B85 (desktop chipsets), C222, C224, C226 (workstation/server chipsets), QM87, HM87, and HM86 (mobile chipsets).
According to the PCN the new stepping will be sampled to customers starting April 19th. Final product will be available starting July 15th. Intel also makes clear that customers must be ready to receive the new stepping by July 31st. In other words, this means by then the old stepping will be phased out and gradually replaced by the new one. Due to the minor change needed to fix the problem, Intel doesn't expect a major impact on customers. The new stepping is basically a drop in replacement.
While an official release date for Haswell hasn't been given yet, Intel is expected to introduce the new chip before the availability of the new chipset stepping. Reportedly Intel let customers sign an agreement to acknowledge the presence of the bug if they wanted to obtain Haswell APUs for launch. The bug in question causes nuisances like USB devices to disappear after entering standby. Detachable devices would have to be reconnected to be found again.
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Senior Member
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Sleepmode is far impatient people anyways

Don Altobello
Posts: 11381
Joined: 2007-07-29

I suppose

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Well, it's not important for desktops but definitely important for laptops, that's for sure. Intel hasn't really disclose the entirety of the bug publicly it seems but a lot of laptop users don't turn off their laptops when they're on the go inside a company. They need to unplug, pack, go to another room or board room and deploy. Sometimes not enough time to wait for the system to go through the boot cycle again.
deltatux
Senior Member
Posts: 13876
Joined: 2003-05-24
I never sleep mode anyways, PC is either On or Off.
This wouldnt effect me either, seeing I have never used sleep more or hibernation on any of pc ever, nor will i ever for that mater. My pc's are either On or Off. Only standby feature I use it for the monitor.
Well, it's not important for desktops but definitely important for laptops, that's for sure. Intel hasn't really disclose the entirety of the bug publicly it seems but a lot of laptop users don't turn off their laptops when they're on the go inside a company. They need to unplug, pack, go to another room or board room and deploy. Sometimes not enough time to wait for the system to go through the boot cycle again.
deltatux
Far as i concerned it for laptops, Desktops are not ment to be lower power devices laptops are. Power saving features something desktops useless imo, Stoves,Microwaves, Washers,dryers AC, Etc and alot of othe appliances use way more power. and power a desktop draws a month is gona nothing close compared to the other stuff.
Don Altobello
Posts: 11381
Joined: 2007-07-29
Oh dear.