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Aug
25
asked Add variant with other options to default entry in GRUB
Aug
16
comment Optimize linux USB hub IO scheduling for external harddrives
The phenomenon I tricle for two days now gets a new twist: Using external power, transfer rates attend the expected speeds. While all drives are spinning happy, only one gets the expected transfer speed at a time without external power. There are no hints in dmesg or something. It seems the drives, or the hub exchange information on available power and adjust operation to it. Is there any known feature or reference for such behaviour?
Aug
16
asked Optimize linux USB hub IO scheduling for external harddrives
Aug
11
comment Delete VirtualBox snapshot's running state
It is, however, possible to delete an intermediate snapshot with running state between non-running ones, like deleting any other state inbetween. So technically it don't seem a large issue, it's just not implemented it seems... Too sad.
Aug
11
asked efficiently append to large tar archive
Aug
10
comment Run commands from a pipe in realtime
This is nice, but works for example pipe only (using grep). I would favor a more general answer like in the comments above.
Aug
10
comment Run commands from a pipe in realtime
The stdbuf method works, so the answer to this question is almost the same as to "how to get unbuffered pipes" questions all around.. Maybe you post a similiar answer?
Aug
10
asked Delete VirtualBox snapshot's running state
Aug
6
asked Run commands from a pipe in realtime
Jul
23
comment Linux USB device won't work after power up without replugging
It seems the BIOS is messing up with the device. If it is plugged just when the BIOS runs the boodloader, it works.
Jul
21
comment Linux USB device won't work after power up without replugging
There is an option in the BIOS to keep it from initalising USB devices. It seem to fix the issue, but introducing a cruft of new ones.
Jul
21
comment Linux USB device won't work after power up without replugging
modprobe does not help, as all usb modules ehci, xhci and ohci are built into kernel on Ubuntu 14.04.
Jul
21
comment Linux USB device won't work after power up without replugging
dmesg says like [ 1.547635] usb 1-6: new low-speed USB device number 5 using xhci_hcd [ 1.549013] usb 1-6: Device not responding to setup address. [ 1.955468] usb 1-6: device not accepting address 5, error -71
Jul
21
comment Linux USB device won't work after power up without replugging
This behaveour even holds when the device is connected by an USB hub.
Jul
21
asked Linux USB device won't work after power up without replugging
Jul
19
asked Linux autostart application focus
Jul
19
asked Chrome browser kiosk mode initial focus on Linux
Jun
29
comment Snapshot a frequently changing file on linux
It is possible to snapshot the file by mv, but that would lead to the problems mentioned above. Maybe the file used for reading and for writing can be two different ones, so the file just written may be copied while writing just fast enough to be repoened for reading the next round. If there would be a special kind of fifo, that would dissect read and write access, one could maybe use tee to capture the output to two files and cat to present the process the last written file for reading.
Jun
29
comment Snapshot a frequently changing file on linux
It is an image that is sequentially updated. So the app most likely reads the full file, and completely writes it afterwards. So if the file is taken away in the meantime, it would be recreated I guess. If however it would go away before reading, it would crash or recreate an empty image which would then replace the real one.
Jun
28
accepted Create empty truecolor PNG with ImageMagick