Faced with a noisy Dell Precision 490 computer running Ubuntu Karmic, I found an easy way to reduce the noise level to an acceptable threshold. (fancontrol did not help since it seems not to be compatible with the chipset used by Dell at least on this computer.)
Step 1, install i8kutils:
sudo apt-get install i8kutils
Step 2, add i8k to /etc/modules:
sudo sh -c 'echo i8k >> /etc/modules'
Step 3, edit /etc/default/i8kmon so that it looks like this:
# /etc/default/i8kmon
# Change to one enable i8kmon
ENABLED=1
I8KMON_ARGS="--daemon --nouserconfig --auto"
The attached patch adds support to mISDN-1_1_9_2 for the Eicon DIVA USB ISDN adapter (071d:1005).
The bits I've added to hfcs_usb.c are from kernel 2.6.31. So far the adapter works fine for me (tested with 1 and 2 concurrent calls to asterisk 1.4.26.1 with chan_misdn).
I've recently acquired an HP Photosmart Premium C309a all-in-one device (CC335B). I planned to use the device mainly for its scanner with duplex-capable automatic document feeder (ADF), in order to archive our mail electronically (more on that later). But I was also happy to get a device which can replace man different ones: it is also a fax, and a nice printer for documents, pictures and even (special) CD/DVDs.
I already have a Canon Selphy CP740 dye sublimation photo printer, which I like very much but has two limitations: 1. it's limited to 10x15 format (4x6 in), and 2. it seems that it's impossible to get the printer to work correctly when attached to a PC as a usb printer. It works nicely in stand-alone mode (ie printing from a digital camera with PictBridge or directly from a CF card), but so far I've only managed to waste paper and ink when trying to print directly from the computer. (I've even installed a fresh Windows XP to try the software from Canon, it didn't work any better.) So the good quality of the HP as a photo printer was one more argument in its favour.
Here is how I was able to print borderless photos directly from The Gimp:
1. If you want no border at all, the image should obviously have the same aspect ratio as the paper you'll print on. If necessary, use "Image" -> "Canvas size" or the Crop tool to adjust it.
2. "File" -> "Page setup": select the correct printer and paper size
3. "File" -> "Print":
- in "Page setup", select "Photo Tray" as paper source
- in "Image Settings", check the box "Ignore Page Margins", then adjust Width/Height so that the picture fills the paper (if it doesn't, get back to step 1)
- in "Advanced", select "Photo" as Printout mode, and "1200 dpi, Photo, Full Bleed" under "Resolution, Quality, Ink Type, Media Type" ("Controlled by 'Printout Mode'" seems to do as well)
In the latest kernel, char bus_id[20] has been removed from struct device. To read or set the device name, dev_name(device) resp. dev_set_name(device) have to be used instead. The attached patch does exactly that. It allows me to run mISDN-1_1_9_2 with kernel 2.6.30.5, with no problem so far. My understanding is that dev_name and dev_set_name have been introduced in 2.6.27.x, hence the check for >= 2.6.28. I haven't tested the patch with kernels older than 2.6.30.5 though.
There is actually at least one very straightforward way to install Ubuntu Netbook Remix without a USB key, without even downloading the image, over the network.
Just follow the instructions in my previous article to get a working Ubuntu Installer over PXE. By default this installer will only setup a very minimal Ubuntu system, without any server or desktop packages.
At some point during the installation, you are offered the possibility to install additional software packages. At this stage you can just tick the box in front of "Ubuntu Network Remix" and that's it! You don't need to select any other package (eg Ubuntu Desktop) for a fully working UNR install. Personally I added "OpenSSH Server" because I want to be able to login remotely. Of course you could also add those packages later on.
