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Samsung laptop running very slow Fedora 18

asked 2013-07-14 20:52:09 +0000

michellinejoy gravatar image

updated 2013-07-15 03:31:59 +0000

I have a brand new Samsung series 7 laptop, it has always been super fast. Lately I have noticed it hangs and takes a while to load anything. When I download something from Firefox (like "save image as") it basically freezes up until the download is complete, I can not click other tabs or do anything until the download is complete. I ran "top" in the terminal and the majority of what shows up is "kworker" and "watchdog". I have searched online to see what these are but I am still unclear. I do have Bleachbit but even after cleaning up a bit it is still slow... Am I missing something? Are there driver updates that I am not doing? In windows these things were easy for me....but I am still a bit slow considering Im new to the Fedora world!! I appreciate the help!

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You can provide helpful information by running the command fpaste --sysinfo in a terminal and updating your question with the URL it returns. Make sure to visit that URL and change the expiration date of the paste so it will be around when your helpers visit it.

randomuser ( 2013-07-16 16:04:56 +0000 )edit

Revisiting after this was bumped by a spammer. I've noticed that heavy system freezing and unresponsiveness often corresponds with browser Flash usage, and I've noticed that my internet experience is mostly undiminished these days by having Flash removed entirely.

randomuser ( 2013-10-22 14:46:18 +0000 )edit

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answered 2013-07-15 02:34:25 +0000

updated 2013-07-15 02:40:52 +0000

Most ultrabooks come with an SSD. Solid state drives differ from magnetic media, because the drive's firmware performs wear leveling, which spreads writes out to keep any one area of the drive from overuse. As a side result, the operating system must also tell the drive's firmware when a file is deleted, so that the cleared space can be used for wear leveling again. Over time, the drive won't have any space left for wear leveling and will probably misbehave.

So, let's get to it. You'll need to run some of these commands as root - be careful!

  1. List your partitions using the commands blkikd and mount.
  2. Identify your root filesystem ( mountpoint /) and home filesystem (if applicable, mountpoint /home)
  3. Discard any unused blocks on these filesystems with the fstrim utility. Replace your findings from the previous steps into the example below:
fstrim /dev/sda3 

fstrim /dev/mapper/vg_fedora-root
  1. Now, make this happen automatically. You have two choices: run fstrim as a cron job, or mount your filesystems with the discard option specified in /etc/fstab
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So I went to "disks" and took a pic of the main screen, would you mind looking at it and letting me know if it looks normal? I was new on another forum and couldn't post a picture so I put it on flickr!! Please go to: So I went to "disks" and took a pic of the main screen, would you mind looking at it and letting me know if it looks normal? I was new on another forum and couldn't post a picture so I put it on flickr!! Please go to: http://www.flickr.com/photos/bostonstrong/9285396677/ and tell me what you think! Only then will I dare attempt your instructions!! Thank you soo much!!

michellinejoy ( 2013-07-15 04:13:13 +0000 )edit

OH and I replaced my hard drive with a 1 TB ssd/hdd if that makes a difference!!!

michellinejoy ( 2013-07-15 04:16:34 +0000 )edit

These instructions will not hurt if you are not using an SSD, but they really only help if you are using an SSD. You'll have to look for more information. BTW - try pressing the "Print Screen" button on your keyboard :)

randomuser ( 2013-07-16 15:58:51 +0000 )edit

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Asked: 2013-07-14 20:52:09 +0000

Seen: 404 times

Last updated: Oct 22 '13