Linux_Problems.txt

$$$$$List of Problems occured in linux and their solutions
$$Prepared by Supantha Sen$$

*1**********
pci error when starting linux:

add pci=noaer to kernel command line:
- edit the file at /etc/default/grub and add pci=noaer to the line- GRUB_CMDLINE_LINUX_DEFAULT. as " GRUB_CMDLINE_LINUX_DEFAULT="quiet splash pci=noaer"
- run "sudo update-grub"
- reboot the system to fix the issue.
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*2**********
Time error between windows and Linux dual boot:

This is because linux use UTC time of the hardware clock whereas windows use the local time, this gives rise to the conflict.
Hence, we can force linus to use the local time to remove the conflict.
To check time details about the time storeed in the hardware clock use the following command 
>timedatectl
RTC in local TZ: is set to No, then change it to yes by the following command
>timedatectl set-local-rtc 1 --adjust-system-clock
To revert back use
>timedatectl set-local-rtc 0 --adjust-system-clock
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*3**********
Windows Partition files as Read-Only to convert to Read Write Options

This is the issue that the disk is still used by windows or due to the ntfs formatting that is stoppig linux to access it.
Make sure that windows is properly shut down before performing the following steps.
Find out which partition is windows use any of the following commands:
>> lsblk
>> fdisk -l 
>> df -h
Unmount the Partition (Eg: /dev/sda3)
>> sudo umount /dev/sda3
Mount the drive again with read write access:
>> mount -v -t ntfs-3g -o rw /dev/sda3 /windows
The windows partition is mounted at /windows and can be used to read write.