Dell XPS L521x setup

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Dell XPS L521x setup

Postby Stratacast1 on Tue Dec 10, 2013 3:16 pm

So I decided to dual boot LM16 Cinnamon on my laptop alongside Windows 7, and I've faced a couple issues so far.
1: The mousepad sort of sucks in Linux on this particular laptop. It has that single click for the entire mousepad except the bottom right which acts as a right click. Whether I tap or try to click, the mouse will jump or do the wrong click so it's not very usable or stable compared to what it does on Linux. I tampered with the synaptics settings in Terminal but it didn't do too much. Anyone else fix or improve this issue or have an idea?

2: My laptop gets hotter in Linux than Windows and the battery gets eaten up quicker. I figure it's because my laptop has 2 GPUs (integrated and a GT 640M). I installed nvidia-current drivers and I installed bumblebee..something missing or is there a way I can improve it more? I'd say my battery life is 66%-75% of what it is in Windows.
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Re: Dell XPS L521x setup

Postby DrHu on Tue Dec 10, 2013 3:32 pm

Touchpads (Dell ? mousepad, although they also have keyboard mouse selections in those models.. ... ad&cat=sup
--Dell results for linux + mousepad

Synaptics picks for mousepad/touchpad!..
    # Tweak virtual memory to conserve power when running on batteries.
    echo 10 > /proc/sys/vm/swappiness
    echo 0 > /proc/sys/vm/dirty_expire_centisecs
    echo 1500 > /proc/sys/vm/dirty_writeback_centisecs
    echo 60 > /proc/sys/vm/dirty_background_ratio
    echo 95 > /proc/sys/vm/dirty_ratio
--that may help with battery power options.., Also check acpi settings, same link..
--ubuntu previous or other Dell models, touchpad won't change that much if at all..

    Linux additional install info..touchpads setups (multitouch!) ... 20XPS%2013

    The touchpad works well with the standard kernel, BUT doesn't have multitouch which is really desirable. Please see the next section to learn how to compile Ubuntu Precise kernel to have full hardware coverage.
Kernel choices often fix outstanding issues with hardware, but that will depend on your Linux distributor..
    Installing kernel 3.9 or higher (optional but HIGHLY recommended)
    Kernel 3.9 and higher has better graphics performance, full support for the touchpad and hibernation works out of the box, but has the inconvenience that the brightness control buttons needs a workaround to work. (Note: you don't need Ubuntu Precise kernel if you use this one) Here is what you can do. First install the kernel (execute commands one by one):
--from the above link.

..By the way is the tochpad an ALPS model ?, if so there were some info on how to make it work better.. ... cs-driver/
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