when trying to run my Laptop after suspend .

I have a black screen and nothing work. keyboard,mouse,touch bad .

My PC : Laptop Dell Inspiron 15 R

Ram :4 GB

graphic Card :Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A]

any help

  • @ElliottFrisch, swap and ram matters only for hibernation, not suspend. Ahmed, try to see if this answer helps you: askubuntu.com/a/436389/16395 .Otherwise, yuo really need to edit your question adding details (type of PC, graphic card/drivers, etc.) – Rmano Apr 4 '14 at 15:45
  • Romano,I tried every thing in this post. but no new . – Ahmed Apr 4 '14 at 16:21
  • Try to see if there is some hint in the file /var/log/pm-suspend.log --- maybe an error or device that got stuck. Are you using open-source drivers for the graphic card or the proprietary ones (fglrx)? – Rmano Apr 4 '14 at 16:59
  • pm-suspend.log file content /etc/pm/sleep.d/novatel_3g_suspend suspend suspend: success. Thu Apr 3 15:51:07 EET 2014: performing suspend \00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00 commandline parameters: Thu Apr 3 16:39:13 EET 2014: Running hooks for suspend. Running hook /usr/lib/pm-utils/sleep.d/000kernel-change suspend suspend: – Ahmed Apr 4 '14 at 21:49
  • Sorry, no idea (BTW, it is much better to add info to the question --- formatting in comments is quite limited). – Rmano Apr 4 '14 at 22:09

Actually there is a bug which you can find in Launchpad.net

Best thing is that there is also a patch through which you can solve this issue.

Follow these steps hope it works for you also:

Open terminal and execute these steps:

1 - Backup old settings

sudo cp /etc/default/grub /etc/default/grub_back

2 - Open file to edit

sudo gedit /etc/default/grub

3 - Replace the line


to the line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pcie_aspm=force"

4 - Save the file Ctrl+S and close Ctrl+Q

Note: The next line to the line mentioned above should be GRUB_CMDLINE_LINUX="" not GRUB_CMDLINE_LINUX="acpi_osi=Linux"

5 - Now execute following command to update the grub

sudo update-grub

Re-start your system once.

Note: If you have trouble in brightness also and above method doesn't fix it then you can test by adding these lines in place I mentioned above.

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"


GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor pcie_aspm=force"


GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"




GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=nomsi"

Note: You have to do a sudo update-grub and a system restart every time you change the grub file

Different system would need different options, if any of the option works, I request to mention that in the comment.

6 - Edit/create the file

gksudo gedit /etc/pm/sleep.d/01_switchvt

7 - copy and paste this code and save


# Switch to a VC before suspending and back after resume

case "$1" in
            chvt 7
            chvt 1

8 - make it executable:

chmod 755 /etc/pm/sleep.d/01_switchvt

sources: https://askubuntu.com/a/387676/265172 and https://askubuntu.com/a/361706/265172

  • now ubuntu working after suspend, but I have another problem because of using this Command GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset".. My Graphic Driver Not working – Ahmed Apr 9 '14 at 23:11
  • run $ sudo aticonfig --initial – Enrico Mendonca Apr 15 '14 at 16:27

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