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Re: [Qemu-devel] [qemu-devel][RFC] Enable usb with default options

From: Gerd Hoffmann
Subject: Re: [Qemu-devel] [qemu-devel][RFC] Enable usb with default options
Date: Thu, 07 Jun 2012 10:54:17 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.4) Gecko/20120422 Thunderbird/10.0.4


> Would it be possible to "whitelist" the QEMU emulated HID devices
> in the kernel to enable dynamic PM for them (at least when they sit
> alone on the bus) ? Or is our emulation busted too ?

The emulation was fixed a while ago (IIRC 0.14+ works correctly).
upstream udev got rules to enable pm for (fixed) qemu hid devices.  So
with recent linux guests this shouldn't be an issue any more.  Older
linux distros and windows guests do still suffer without manual
invention though.


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