Arch Linux

cbrake

Member

Registered: 2013-05-17

Posts: 7

/sys mounted read only

Hi,

Trying to get suspend working on a desktop system, and getting the following:

Oct 29 11:46:29 mars sudo[9754]: cbrake : TTY=pts/3 ; PWD=/home/cbrake ; USER=root ; COMMAND=/usr/bin/systemctl suspend
Oct 29 11:46:29 mars sudo[9754]: pam_unix(sudo:session): session opened for user root by (uid=0)
Oct 29 11:46:29 mars systemd[1]: Starting Sleep.
Oct 29 11:46:29 mars systemd[1]: Reached target Sleep.
Oct 29 11:46:29 mars systemd[1]: Starting Suspend...
Oct 29 11:46:29 mars systemd-sleep[9757]: Failed to open /sys/power/state: Read-only file system
Oct 29 11:46:29 mars systemd[1]: systemd-suspend.service: main process exited, code=exited, status=1/FAILURE
Oct 29 11:46:29 mars systemd[1]: Failed to start Suspend.
Oct 29 11:46:29 mars systemd[1]: Dependency failed for Suspend.
Oct 29 11:46:29 mars systemd[1]: Unit sleep.target is not needed anymore. Stopping.
Oct 29 11:46:29 mars systemd[1]: Unit systemd-suspend.service entered failed state.
Oct 29 11:46:29 mars sudo[9754]: pam_unix(sudo:session): session closed for user root
Oct 29 11:46:29 mars systemd[1]: Stopping Sleep.
Oct 29 11:46:29 mars systemd[1]: Stopped target Sleep.

I then checked, and /sys is indeed mounted RO:

sys on /sys type sysfs (ro,nosuid,nodev,noexec,relatime)

Does anyone have ideas how to encourage /sys to be mounted RW?

Thanks,
Cliff

WorMzy

Forum Moderator

From: Scotland

Registered: 2010-06-16

Posts: 11,896

Website

Re: /sys mounted read only

mount -oremount,rw /sys?

I think the real question is: Why is your /sys mounted ro in the first place? Have you got anything in your fstab that might be causing this?

---

Sakura:-
Mobo: MSI MAG X570S TORPEDO MAX // Processor: AMD Ryzen 9 5950X @4.9GHz // GFX: AMD Radeon RX 5700 XT // RAM: 32GB (4x 8GB) Corsair DDR4 (@ 3000MHz) // Storage: 1x 3TB HDD, 6x 1TB SSD, 2x 120GB SSD, 1x 275GB M2 SSD

Making lemonade from lemons since 2015.

cbrake

Member

Registered: 2013-05-17

Posts: 7

Re: /sys mounted read only

here is my fstab -- I don't see anything too alarming there.  I do noticed that on newer arch installs, the tmpfs line is not there.

#
# /etc/fstab: static file system information
#
# <file system>    <dir>    <type>    <options>    <dump>    <pass>
tmpfs        /tmp    tmpfs    nodev,nosuid    0    0

# /dev/sda2
UUID=8a08179d-aa48-4c76-9735-a0be09a06098    /             ext4          rw,relatime    0 1

# /dev/sda1
UUID=24C4-C206      /boot/efi     vfat          rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro    0 2

UUID=08ec403b-a035-4285-b9eb-03900711cb2b    /scratch   ext4  defaults    0 2

/dev/sda3    /scratch2    ext4     defaults 0 2

cbrake@mars:/home/fileserver /media/fileserver     fuse.sshfs defaults,_netdev,port=26,idmap=user,IdentityFile=/home/cbrake/.ssh/id_dsa,allow_other,reconnect     0 0