Restoring wireless and Bluetooth state after reboot in Fedora 22
··591 words·3 mins
My upgrade to Fedora 22 on the ThinkPad X1 Carbon was fairly uneventful and the hiccups were minor.
Fedora
2015
Aruba access points, EAP, and wpa_supplicant 2.4 bugs
··187 words·1 min
I stumbled upon a strange bug at work one day and found I couldn’t connect to our wireless access points any longer.
Allow new windows to steal focus in GNOME 3
··237 words·2 mins
GNOME 3 generally works well for me but it has some quirks.
Stumbling into the world of 4K displays [UPDATED]
··638 words·3 mins
Woot suckered me into buying a 4K display at a fairly decent price and now I have a Samsung U28D590D sitting on my desk at home.
Fedora 22 and rotating GNOME wallpaper with systemd timers
··257 words·2 mins
My older post about rotating GNOME’s wallpaper with systemd timers doesn’t seem to work in Fedora 22.
Book Review: Linux Kernel Development
··760 words·4 mins
I picked up a copy of Robert Love’s book, Linux Kernel Development, earlier this year and I’ve worked my way through it over the past several weeks.
Improving LXC template security
··312 words·2 mins
I’ve been getting involved with the Fedora Security Team lately and we’re working as a group to crush security bugs that affect Fedora, CentOS (via EPEL) and Red Hat Enterprise Linux (via EPEL).
Time for a new GPG key
··254 words·2 mins
After an unfortunate death of my Yubikey NEO and a huge mistake on backups, I’ve come to realize that it’s time for a new GPG key.
Chrome 43 stuck in HiDPI mode
··311 words·2 mins
I ran some package updates last night and ended up with a new version of Google Chrome from the stable branch.
cups.service start operation timed out in Fedora 22
··157 words·1 min
Applications on my Fedora 22 system kept stalling when I attempted to print.
PulseAudio popping with multiple sounds in Fedora 22
··485 words·3 mins
My transition from Fedora 21 to 22 on the ThinkPad X1 Carbon was fairly uneventful even with over 2,400 packages involved in the upgrade.
Xen 4.5 crashes during boot on Fedora 22
··169 words·1 min
If you’re currently running a Xen hypervisor on a Fedora release before 22, stay put for now.
Keep old kernels with yum and dnf
··206 words·1 min
When you upgrade packages on Red Hat, CentOS and Fedora systems, the newer package replaces the older package.
Automatic package updates with dnf
··354 words·2 mins
With Fedora 22’s release date quickly approaching, it’s time to familiarize yourself with dnf.
Tweetdeck’s Chrome notifications stopped working
··298 words·2 mins
With the last few weeks, I noticed that Tweetdeck’s notifications weren’t showing up in Chrome any longer.
Run virsh and access libvirt as a regular user
··194 words·1 min
Libvirt is a handy way to manage containers and virtual machines on various systems. On most distributions, you can only access the libvirt daemon via the root user by default. I’d rather use a regular non-root user to access libvirt and limit that access via groups.
Review: Lenovo X1 Carbon 3rd generation and Linux
··852 words·4 mins
After a boatload of challenges with what I thought would be my favorite Linux laptop, the Dell XPS 13 9343, I decided to take the plunge on a new Lenovo X1 Carbon (3rd gen). My late-2013 MacBook Pro Retina (MacbookPro11,1) had plenty of quirks when running Linux and I was eager to find a better platform.
Share a wireless connection via ethernet in GNOME 3.14
··368 words·2 mins
There are some situations where you want to do the opposite of creating a wireless hotspot and you want to share a wireless connection to an ethernet connection. For example, if you’re at a hotel that offers only WiFi internet access, you could share that connection to an ethernet switch and plug in more devices. Also, you could get online with your wireless connection and create a small NAT network to test a network device without mangling your home network.
Creating a bridge for virtual machines using systemd-networkd
··612 words·3 mins
There are plenty of guides out there for making ethernet bridges in Linux to support virtual machines using built-in network scripts or NetworkManager.
Test Fedora 22 at Rackspace with Ansible
··105 words·1 min
Fedora 22 will be arriving soon and it’s easy to test on Rackspace’s cloud with my Ansible playbook:
Using play/pause buttons in Chrome with GNOME 3
··160 words·1 min
I wrote a post last summer about preventing Chrome from stealing the media buttons (like play, pause, previous track and next track) from OS X.
Rotate GNOME 3’s wallpaper with systemd user units and timers
··645 words·4 mins
NOTE: This works in Fedora 21, but not in Fedora 22.
Lessons learned from a kernel bisection
··494 words·3 mins
I’m far from being a kernel developer, but I found myself staring down a [peculiar touchpad problem][2] with my new Dell XPS 13.
Linux support for the Dell XPS 13 9343 (2015 model)
··2745 words·13 mins
I’M ALL DONE: I’m not working on Linux compatibility for the XPS 13 any longer.
2014
Try out LXC with an Ansible playbook
··406 words·2 mins
The world of containers is constantly evolving lately.
Install sysstat on Fedora 21
··366 words·2 mins
One of the first tools I learned about after working with Red Hat was sysstat.
Send weechat notifications via Pushover
··238 words·2 mins
IRC is my main communication mechanism and I’ve gradually moved from graphical clients, to irssi and then to weechat.
Trust an IP address with firewalld’s rich rules
··308 words·2 mins
Managing firewall rules with iptables can be tricky at times.
Test Fedora 21 at Rackspace with Ansible
··73 words·1 min
Fedora 21 reached Alpha status last month and will reach beta status at the end of October.
Apache’s mod_proxy, mod_ssl, and BitTorrent Sync
··337 words·2 mins
BitTorrent Sync allows you to keep files synchronized between multiple computers or mobile devices.
HOWTO: Time Warner Cable and IPv6
··1158 words·6 mins
Asus Maximus VI Gene – Error 55
··557 words·3 mins
It’s been quite a while since I built a computer but I decided to give it a try for a new hypervisor/NAS box at home.
Start Jenkins on Fedora 20
··278 words·2 mins
Installing Jenkins on Fedora 20 is quite easy thanks to the available Red Hat packages, but I ran into problems when I tried to start Jenkins.
httpry 0.1.8 available for RHEL and CentOS 7
··101 words·1 min
Red Hat Enterprise Linux and CentOS 7 users can now install httpry 0.
Unexpected predictable network naming with systemd
··472 words·3 mins
While using a Dell R720 at work today, we stumbled upon a problem where the predictable network device naming with systemd gave us some unpredictable results.
Adventures in live booting Linux distributions
··1008 words·5 mins
We’re all familiar with live booting Linux distributions.
AVC: denied dyntransition from sshd
··163 words·1 min
I’ve been working with some Fedora environments in chroots and I ran into a peculiar SELinux AVC denial a short while ago:
Install Debian packages without starting daemons
··379 words·2 mins
My work at Rackspace has involved working with a bunch of Debian chroots lately.
Getting Dell’s racadm working in Fedora 20
··229 words·2 mins
Dell provides the racadm software on Linux that allows you to manage Dell hardware from a Linux system.
Fixing broken DNS lookups in spamassassin
··311 words·2 mins
I talked about the joys of running my own mail server last week only to find that my mail server was broken yesterday.
Switching to systemd on Debian jessie
··255 words·2 mins
It seems like everyone is embracing systemd these days.
Text missing in chrome on Linux
··245 words·2 mins
I’m in the process of trying Fedora 20 on my retina MacBook and I ran into a peculiar issue with Chrome.
Configure static IP addresses for Project Atomic’s KVM image
··130 words·1 min
Amid all of the Docker buzz at the Red Hat Summit, Project Atomic was launched.
Launch secure LXC containers on Fedora 20 using SELinux and sVirt
··1284 words·7 mins
Getting started with LXC is a bit awkward and I’ve assembled this guide for anyone who wants to begin experimenting with LXC containers in Fedora 20.
openssl heartbleed updates for Fedora 19 and 20
··157 words·1 min
The openssl heartbleed bug has made the rounds today and there are two new testing builds or openssl out for Fedora 19 and 20:
Docker, trusted builds, and Fedora 20
··417 words·2 mins
Docker is a hot topic in the Linux world at the moment and I decided to try out the new trusted build process.
virt-manager: ‘NoneType’ object has no attribute ‘cpus’
··188 words·1 min
After upgrading my Fedora 20 Xen hypervisor to virt-manager 1.
2013
Speed up your Fedora PXE installations by hosting the stage2 installer locally
··152 words·1 min
In my previous post about installing Fedora via PXE, I forgot to mention a big time saver for the installation.
One month using a Linux laptop at work: Back to the Mac
··809 words·4 mins
This post has been a bit delayed, but I want to follow up on the post I wrote last month about moving from OS X to Linux at work.