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I installed Ubuntu 15.04 (64 bit) on a DELL XPS 13 (model 9343, 2015 edition - bios A03). It is a dual boot machine (Windows and Linux). I am having an annoying problem: Ubuntu randomly freezes. The screen does NOT go blank, mouse and keyboard do not work, touchpad does not work. I ran the bios diagnostic tests and found no hardware problems. My kernel is 3.19.0-16.

marked as duplicate by Panther, Tim, karel, Eric Carvalho, Maythux May 12 '15 at 6:34

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  • See also wiki.ubuntu.com/X/Troubleshooting/Freeze - The fact of the matter is that without additional information it is impossible for us to support you. We need to know your hardware and any errors in the logs. FWIW most, if not all of the freezes I have seen come from one or several of the following - (bad hardware ) faulty graphics drivers, faulty wireless drivers, kernel bugs, bad RAM, and/or bad hard drive. – Panther May 7 '15 at 20:13
  • If you have a kernel bug, the first thing you will be asked is if the problem persists on the most recent stable kernel release (from kernel.org), which is a bit of a hassle to say the least. Closest is the ubuntu mainline kernel - wiki.ubuntu.com/Kernel/MainlineBuilds – Panther May 7 '15 at 20:15
  • The crashes are happening when I suspend to RAM. Sometimes when I try to suspend to RAM the computer freezes and the Caps Lock light keeps blinking. I am attaching form info on my hardware. – jsbach May 10 '15 at 11:11
  • <code>cribari@darwin4:~$ sudo dmidecode -s bios-version A03 cribari@darwin4:~$ sudo dmidecode -s bios-release-date 03/25/2015 cribari@darwin4:~$ sudo dmidecode -s baseboard-product-name 0310JH cribari@darwin4:~$ sudo dmidecode -s baseboard-manufacturer</code> – jsbach May 10 '15 at 11:15
  • [code]cribari@darwin4:~$ uname -a Linux darwin4 3.19.0-16-generic #16-Ubuntu SMP Thu Apr 30 16:09:58 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux cribari@darwin4:~$ apt-cache policy bcmwl-kernel-source bcmwl-kernel-source: Installed: 6.30.223.248+bdcom-0ubuntu2 Candidate: 6.30.223.248+bdcom-0ubuntu2 Version table: *** 6.30.223.248+bdcom-0ubuntu2 0 500 br.archive.ubuntu.com/ubuntu vivid/restricted amd64 Packages 100 /var/lib/dpkg/status[/code] – jsbach May 10 '15 at 11:15

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