From: Sven <1096714@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [Bug 1096714] [NEW] qemu 1.3.0: usb devices shouldn't have same vendor/product ID and same serial
Date: Mon, 07 Jan 2013 01:23:37 -0000 [thread overview]
Message-ID: <20130107012337.1165.80927.malonedeb@gac.canonical.com> (raw)
In-Reply-To: 20130107012337.1165.80927.malonedeb@gac.canonical.com
Public bug reported:
Boot Windows XP with
./qemu-system-i386 -device pci-ohci -device usb-tablet
and then with
./qemu-system-i386 -device pci-ohci -device usb-kbd
and you will notice, that the usb keyboard is not detected. In fact,
Windows XP detects the usb tablet and loads the driver for the tablet
instead of the driver for the keyboard.
The problem seems to be, that vendor and product ID and even the seriel
of both the usb tablet and the usb keyboard are the same as an lsusb
reveiles. Hence, Windows XP doesn't detect when you replace the tablet
by a keyboard and vice versa. I didn't check other USB devices, but it
seems a bad idea to me to have devices with the same vendor/product Id.
I'm not aware, whether it is sufficient to change the seriel numbers of
the devices.
** Affects: qemu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1096714
Title:
qemu 1.3.0: usb devices shouldn't have same vendor/product ID and same
serial
Status in QEMU:
New
Bug description:
Boot Windows XP with
./qemu-system-i386 -device pci-ohci -device usb-tablet
and then with
./qemu-system-i386 -device pci-ohci -device usb-kbd
and you will notice, that the usb keyboard is not detected. In fact,
Windows XP detects the usb tablet and loads the driver for the tablet
instead of the driver for the keyboard.
The problem seems to be, that vendor and product ID and even the
seriel of both the usb tablet and the usb keyboard are the same as an
lsusb reveiles. Hence, Windows XP doesn't detect when you replace the
tablet by a keyboard and vice versa. I didn't check other USB devices,
but it seems a bad idea to me to have devices with the same
vendor/product Id. I'm not aware, whether it is sufficient to change
the seriel numbers of the devices.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1096714/+subscriptions
next parent reply other threads:[~2013-01-07 1:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-07 1:23 Sven [this message]
2017-07-26 16:24 ` [Qemu-devel] [Bug 1096714] Re: qemu 1.3.0: usb devices shouldn't have same vendor/product ID and same serial Michal Suchanek
2017-07-26 17:03 ` Sven
2017-07-26 18:00 ` Dr. David Alan Gilbert
2017-07-27 8:22 ` Gerd Hoffmann
2017-07-27 14:20 ` Michal Suchanek
2021-05-03 11:27 ` Thomas Huth
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