I have been using Ubuntu for many years but the current version 20.04 giving me the most headache. A few days back after suspending the system for 2-3 hours, the whole battery was drained. Then I change the grub from s2idle to deep sleep and it rectified the issue. Now, what is happening is that after suspending the computer (closing the lid), it wakes up but the screen is always black and no key works. So I have to forcefully shut down with a long press power button. Also if I keep open the system for a long time (1-2 hours) without closing the lid same thing happens.
I saw similiar related questions had asked by many people but none of the solutions worked for me. So I am asking again with my system-specific configuration.
Here are the details
cat /etc/default/grub
# 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=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=deep"
GRUB_CMDLINE_LINUX="nouveau.blacklist=1"
# 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"
(base) ankit@ankit:~$
And my system configuration
