Difference between revisions of "Airtop2 running on embedded GPU is flickering/bad display on Linux"

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'''Instructions:'''
 
'''Instructions:'''
  
* Add kernel parameter "intel_idle.max_cstate=4" to the kernel boot line.
+
* Add kernel parameter '''"intel_idle.max_cstate=4"''' to the kernel boot line.
** Edit /etc/default/grub as root, for example: sudo nano /etc/default/grub  
+
** Edit '''/etc/default/grub''' as root, for example: '''sudo nano /etc/default/grub'''
** Add intel_idle.max_cstate=4, it should look like this: GRUB_CMDLINE_LINUX="intel_idle.max_cstate=4"   
+
** Add '''intel_idle.max_cstate=4''', it should look like this: '''GRUB_CMDLINE_LINUX="intel_idle.max_cstate=4"'''    
 
** Save the file and close the editor
 
** Save the file and close the editor
** Run sudo update-grub2 to regenerate the grub config files
+
** Run '''sudo update-grub2''' to regenerate the grub config files
  
 
'''Note:''' If you need to boot from LiveUSB you will need to add "intel_idle.max_cstate=4" to the kernel boot line manually.
 
'''Note:''' If you need to boot from LiveUSB you will need to add "intel_idle.max_cstate=4" to the kernel boot line manually.
 
For example on LinuxMint you need to press "e" to edit kernel boot line from the GRUB menu.
 
For example on LinuxMint you need to press "e" to edit kernel boot line from the GRUB menu.

Revision as of 09:21, 6 January 2019

  • The following document applies to Airtop2 running Linux, with embedded display output.
  • The solution has been tested on the following system:
Device: Airtop2
CPU: Intel(R) Xeon(R) CPU E3-1275 v6
BIOS: 04/17/2018 American Megatrends Inc. 5.12_ATOP2.PRD.0.45.2 EFI
OS: Linux Mint 19 Tara
Kernel: 4.15.0-23-generic

Instructions:

  • Add kernel parameter "intel_idle.max_cstate=4" to the kernel boot line.
    • Edit /etc/default/grub as root, for example: sudo nano /etc/default/grub
    • Add intel_idle.max_cstate=4, it should look like this: GRUB_CMDLINE_LINUX="intel_idle.max_cstate=4"
    • Save the file and close the editor
    • Run sudo update-grub2 to regenerate the grub config files

Note: If you need to boot from LiveUSB you will need to add "intel_idle.max_cstate=4" to the kernel boot line manually. For example on LinuxMint you need to press "e" to edit kernel boot line from the GRUB menu.