users June 2012

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297 participants
392 discussions

/dev/ttyUSB0 spontaneously changes to /dev/ttyUSB1
by Jonathan Ryshpan 06 Jun '12

06 Jun '12

This is a problem which is being kicked around on another mailing list, devoted to the wview weather server, without very good results, so I have taken the liberty of putting it to a wider audience: I have a system with a device (a Davis VantagePro2 weather console) attached to a USB port. When the system starts, the device is visible as /dev/ttyUSB0. A wview server attaches to /dev/ttyUSB0 and runs fine till suddenly the device disappears from /dev/ttyUSB0 and appears as /dev/ttyUSB1, at which time the server fails. I suspect (though without much evidence) that the reason for the device moving around is that there is a brief interruption of service from the device, so that it appears to the computer that a *new* device has appeared, which it has to find a device name for before it had deleted the old name of the device. I have tried the obvious, to open what ought to be the permanent location of the device, namely: /dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0 But the software stops working when the change takes place, evidently because /dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0 is a dynamically updated symbolic link to /dev/ttyUSB0 or /dev/ttyUSB1, as the case may be. The server can only be made to work again by restarting it. Does anyone know of a way to keep the USB device open at a known location, maybe by creating a permanent entry in /dev, and bypassing udev? Any more theories about what, in general, is happening? Thanks - jon

5 4

Manually installing Firefox 13
by Fernando Cassia 06 Jun '12

06 Jun '12

What's the right procedure to manually install Firefox 13 on top of F17?. It's been so long that I had forgotten it's simple a tar file. Where do I unpack it?. Apparently in F17 firefox is spread between /usr/bin/firefox and /usr/lib/firefox instead of on its own subdir like /opt/firefox FC

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Fedora 17 on vmware esxi 5.0
by Manuel Gonzalez Montoya 06 Jun '12

06 Jun '12

Hi, I just did a fresh install of F17 on a ESXi 5.0 VM, and it crash on first boot with the message "Oh no! Something have gone wrong. A problem ocurred and the system can't recover. Please contact the system administrator" along with a sad computer face. I tried the 32 and the 64 bit version and both present the same issue. Any ideas? Thanks in advance

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Re: Red Hat Will Pay Microsoft To Get Past UEFI Restrictions
by Sam Varshavchik 06 Jun '12

06 Jun '12

JD writes: > On 06/05/2012 03:47 AM, Sam Varshavchik wrote: >> >> Don't worry about. Microsoft will make sure that the OEM knows exactly how >> to implement the ability to install keys for other operating systems. >> >> >> > I like this sense of humor :) :) You thought I was joking?

3 2

Scolling bar missing single step arrow
by Vinny Onelli 06 Jun '12

06 Jun '12

Hello, I install F17, the single step arrow are no longer there any body have a clue on how to get them back?

1 0

Re: Red Hat Will Pay Microsoft To Get Past UEFI Restrictions
by Sam Varshavchik 05 Jun '12

05 Jun '12

JD writes: > I lost you guy! > I mean I do not understand how the creation of a single linux distro > signature authority for all linuxes, undermines whatever MS does to secure > it's OS. > Are the two necessarily mutually exclusive (i.e. they cannot both be used on > dual or milti-boot systems? This has been explained in this thread before. It is logically impossible to have a so-called "secure-boot" for both a free OS and a non-free OS on the same platform. Since, by definition, a free OS allows unrestricted access to the hardware, a free OS can then be trivially used to bypass any secure boot hardware restrictions for a non-free OS. Secure boot is worthless to Microsoft, if Linux is able to use it. This is a provable fact. Therefore, no matter what the current drivel in Microsoft's published literature says right now, Linux will be denied access to "secure boot" hardware, in its final form. Microsoft will make sure of that.

8 15

Printing in Landscape format in KDE.
by Mickey 05 Jun '12

05 Jun '12

F15, F17 . Can't print in Landscape Format when printing a calendar in KOrganizer . I Can print Landscape format in Libre-Office, and other Apps. What could be the problem ?

1 0

How to run KNetworkManager
by JD 05 Jun '12

05 Jun '12

Could someone please tell me how to use KNetworkManager? I have kde-plasma-networkmanagement-0.9.0.2-1.fc16.i686 installed, but I cannot find the icon nor the binary for KNetworkManager. Could someone please clue me in?

4 9

F17 upgrade frustration
by Mark Haney 05 Jun '12

05 Jun '12

I've about had it with this bloody upgrade nonsense. Nothing I do gets me past the 'dirty filesystems' dialog when trying to upgrade. I filed a bug report, but so far no answer. Has anyone else found a way to make this go away? Short of a wipe/install that is. -- Mark Haney Software Developer/Consultant AB Emblem markh(a)abemblem.com Linux marius.homelinux 3.3.7-1.fc16.x86_64 GNU/Linux

4 4

F17 virt-install with kickstart from local ftp
by Reiner Rottmann 05 Jun '12

05 Jun '12

Hi, I recently upgraded from F16 to F17 and during post install I usually setup a virtual test box to play around with. The following command worked with F16: #/usr/bin/virt-install --vnc --noautoconsole --name=vserver.example.com --ram=768 --arch=i386 --vcpus=1 --os-type=linux --os-variant=rhel6 --hvm --accelerate --disk=/dev/vgsystem/vserver.example.com -m 52:54:00:42:2C:C4 -w bridge=virbr0 --location=ftp://192.168.122.1/pub/fedora/linux/releases/16/Fedora/i386/os/ --extra-args='ks=ftp://192.168.122.1/pub/kickstart/vserver.cfg ip=192.168.122.100 netmask=255.255.255.0 gateway=192.168.122.1 dns=208.67.222.222 noipv6 s=100' With F17 and the dracut based initial ramdisk, this command fails. I receive the following error message and a kernel panic before anaconda even starts: FATAL: Please supply bootdev argument for multiple ip= lines I also tried the 'ip=<ip>::<gw>:<nm>[:<dev>]' method to configure the network interface the dracut way: # /usr/bin/virt-install --vnc --noautoconsole --name=vserver.example.com --ram=1024 --arch=i386 --vcpus=1 --os-type=linux --os-variant=rhel6 --hvm --accelerate --disk=/dev/vgsystem/vserver.example.com -m 52:54:00:42:89:08 -w bridge=virbr0 --location=ftp://192.168.122.1/pub/fedora/linux/releases/17/Fedora/i386/os '--extra-args=ks=ftp://192.168.122.1/pub/kickstart/vserver.cfg ip=192.168.122.100::192.168.122.1:255.255.255.0 nameserver=208.67.222.222 noipv6 s=100' With this command the virtual machine boots and drops to a dracut debug shell. However no network interface gets configured and I receive the following messages: dracut Warning: Unable to process initqueue dracut Warning: /dev/root does not exist Could someone please enlighten me, how I may automatically kickstart my test box with Fedora 17? Thanks! Best regards, Reiner

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