Skip to main content

Ubuntu 12.04 Toshiba satellite L875D keyboard, mouse issues on login

I just bought a new laptop and then tried installing ubuntu 12.04 on it and ran into all sorts of issues from first wireless not working and then keyboard or mouse not working after installing the software updates.

The keyboard and mouse works fine on initial listing of operating systems but when the login prompt comes I cant enter anything on the screen. I was like WTF man.  Googling around gave me an idea of pluggin in an external mouse and usb keyboard and it worked. So I was even more frustrated.  Finally after combining things from various posts I figured out that I have to change grub2 config and add some more settings to it.

Open a terminal and enter

sudo vi /etc/default/grub

and then change the line GRUB_CMDLINE_LINUX="" to GRUB_CMDLINE_LINUX="i8042.nomux=1 i8042.reset"

then run

sudo update-grub

reboot the system and all issues were gone.

Comments

  1. With a laptop Packard Bell
    AMD E1-1200 APU with Radeon(tm) HD Graphics × 2
    the keyboard and mouse problems were solved as well.
    Thank you !

    ReplyDelete
  2. OMG this was bugging me for quite some time now, and this solution was the one that worked, I am really thankful to you right now, random stranger :)

    ReplyDelete
  3. Man, I just want to thank you!!!
    With this article, you save my life!!!
    Works for me!!!
    Solved my problem...

    ReplyDelete
  4. How can I do that if my keyboard doesn't work? Haha

    ReplyDelete
    Replies
    1. Franco I forgot to mention that it was the laptop's native keyboard and mouse that weren't working, I plugged in an external keyboard to make change to the grub file.

      Delete
  5. How do I run once I've changed the code?

    ReplyDelete
    Replies
    1. Run the below command in a terminal and restart your machine.
      sudo update-grub

      Delete

Post a Comment

Popular posts from this blog

Killing a particular Tomcat thread

Update: This JSP does not work on a thread that is inside some native code.  On many occasions I had a thread stuck in JNI code and it wont work. Also in some cases thread.stop can cause jvm to hang. According to javadocs " This method is inherently unsafe. Stopping a thread with Thread.stop causes it to unlock all of the monitors that it has locked". I have used it only in some rare occasions where I wanted to avoid a system shutdown and in some cases we ended up doing system shutdown as jvm was hung so I had a 70-80% success with it.   -------------------------------------------------------------------------------------------------------------------------- We had an interesting requirement. A tomcat thread that was spawned from an ExecutorService ThreadPool had gone Rogue and was causing lots of disk churning issues. We cant bring down the production server as that would involve downtime. Killing this thread was harmless but how to kill it, t

Adding Jitter to cache layer

Thundering herd is an issue common to webapp that rely on heavy caching where if lots of items expire at the same time due to a server restart or temporal event, then suddenly lots of calls will go to database at same time. This can even bring down the database in extreme cases. I wont go into much detail but the app need to do two things solve this issue. 1) Add consistent hashing to cache layer : This way when a memcache server is added/removed from the pool, entire cache is not invalidated.  We use memcahe from both python and Java layer and I still have to find a consistent caching solution that is portable across both languages. hash_ring and spymemcached both use different points for server so need to read/test more. 2) Add a jitter to cache or randomise the expiry time: We expire long term cache  records every 8 hours after that key was added and short term cache expiry is 2 hours. As our customers usually comes to work in morning and access the cloud file server it can happe

Preparing for an interview after being employed 11 years at a startup

I would say I didn't prepared a hell lot but  I did 2 hours in night every day and every weekend around 8 hours for 2-3 months. I did 20-30 leetcode medium problems from this list https://leetcode.com/explore/interview/card/top-interview-questions-medium/.  I watched the first 12 videos of Lecture Videos | Introduction to Algorithms | Electrical Engineering and Computer Science | MIT OpenCourseWare I did this course https://www.educative.io/courses/grokking-the-system-design-interview I researched on topics from https://www.educative.io/courses/java-multithreading-for-senior-engineering-interviews and leetcode had around 10 multithreading questions so I did those I watched some 10-20 videos from this channel https://www.youtube.com/channel/UCn1XnDWhsLS5URXTi5wtFTA