From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ozan =?utf-8?q?=C3=87a=C4=9Flayan?= Date: Tue, 22 Jun 2010 12:06:45 +0000 Subject: Re: Weird race-like problem in udev Message-Id: <201006221506.45266.ozan@pardus.org.tr> List-Id: References: <4C1F97A0.2040905@pardus.org.tr> In-Reply-To: <4C1F97A0.2040905@pardus.org.tr> MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: quoted-printable To: linux-hotplug@vger.kernel.org Sal=C4=B1 22 Haziran 2010 g=C3=BCn=C3=BC (saat 14:31:57) Kay Sievers =C5=9F= unlar=C4=B1 yazm=C4=B1=C5=9Ft=C4=B1: >=20 > Please, this isn't a quiz here, so provide the needed basic > information that goes beyond "a device" and " the driver". :) Ok, I'm very suspicious about the report and what the user describes, too. = I'll try to detail in here. What he's talking about in its bug report is a USB mass storage device: [ 4741.302054] usb 1-2: new high speed USB device using ehci_hcd and addres= s 3 [ 4743.914330] usb 1-2: New USB device found, idVendor=066f, idProduct=8000 [ 4743.914343] usb 1-2: New USB device strings: Mfr=3D1, Product=3D2,=20 SerialNumber=3D3 [ 4743.914353] usb 1-2: Product: [ 4743.914360] usb 1-2: Manufacturer: [ 4743.914367] usb 1-2: SerialNumber: 0002F68C0A104E19 [ 4743.914623] usb 1-2: configuration #1 chosen from 1 choice He also mentions that its webcam driver doesn't get loaded too. He posted t= he=20 test-webcam output which complains about a non existing /dev/video0 node. If the devices are plugged and then the system is rebooted, all the related= =20 drivers are loaded and he tells that he has no problems at all. >=20 > > * He discovered that spawning a 2nd udevd by hand resolves the issue >=20 > That's not possible, udevd will refuse to start a second time, and not > do anything. It lets this report look suspicious that something is > wrong with the way the behavior is described. I misunderstood this. He was talking about killing and respawning udevd, no= t=20 spawning a 2nd or a 3rd one, sorry. But yes he says that killing and=20 respawning it resolves the issue. I am not really hopeful to get this resolved as trying to ask him and waiti= ng=20 for an answer is very hard for that kind of standard users who are not=20 familiar at all with udev, kernel, etc. Sorry for the inconvenience, I will= =20 report back here if I get something valuable. Regards, --- Ozan =C3=87a=C4=9Flayan TUBITAK/UEKAE - Pardus Linux http://www.pardus.org.tr/eng