Massive Latency, and no PCI port Acer

I'm struggling to get to the grub menu

I was able to get into the Grub Menu by changing some boot options and hitting esc on reboot. latency is down but still in the 9m. I dont think there is anything else to disable in the BIOS

Kindly post the result of:

see the line with "GRUB_CMDLINE_LINUX_DEFAULT". You could try setting some or all of the following options:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash intel_idle.max_cstate=0 processor.max_cstate=1 idle=poll isolcpus=x";

for "x" see wiki.altervista.org/cs/kernel_boot_parameters

If you use my script here and post the results, more details about the pc will be available.

hth

greez
chris

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
# info -f grub -n 'Simple configuration'

GRUB_DEFAULT=0
GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
#GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

I have tried 2 more computers with the same 19.3 Mate and linuxcnc 2.8 download after this computer ACER. I have slow internet and am not good with this stuff. Once I knew I could complete the install successfully I repeated it on different machines hoping for better results. (insanity?)

Computer #2 HP Pavilion a 6567c Intel Core 2 Quad Q6600, 4096mg memory, 640GB HD, NVIDIA GeForce 9300 GE Graphics card, was running Windows Vista Home Premium.
With 19.3 Mate and 2.8 (Latency in the double digit millions)
-tried installing the NVIDIA Drivers with no gained latency results
-pulled the NVIDIA Graphics card and running the integrated card with no significant gain
-attempted kernal 5.0, no massive reduction

Computer #3 HP Elite Book 8470p intel Core I5 running Debian xfce 4.8? and CNC 2.7. (Latency below 50K) I didn't like the mint environment on a laptop but the latency was again massive.

Both of these machines I needed to use a dvd because there was no usb boot option.

riversvic
As far as my own experience and knowledge in thies forum goes: nvidia and linuxcnc are enemies. Get another GPU.

Further, at least add " idle=poll" to GRUB_CMDLINE_LINUX_DEFAULT

Besides: do not forget to run "update_grub* afterwards or your system will not use the new parameters.

hth
chris