# ls -al /sys/dev/char/226:0 lrwxrwxrwx 1 root root 0 May 12 19:21 /sys/dev/char/226:0 -> ../../devices/pci0000:00/0000:00:02.0/drm/card0 # ls -al /sys/devices/pci0000\:00/0000\:00\:02.0/drm/card0/ drwxr-xr-x 7 root root 0 May 12 19:21 . drwxr-xr-x 5 root root 0 May 12 19:21 .. drwxr-xr-x 5 root root 0 May 12 19:21 card0-DP-1 drwxr-xr-x 3 root root 0 May 12 19:21 card0-HDMI-A-1 drwxr-xr-x 4 root root 0 May 12 19:21 card0-LVDS-1 drwxr-xr-x 3 root root 0 May 12 19:21 card0-VGA-1 -r--r--r-- 1 root root 4096 May 12 19:21 dev lrwxrwxrwx 1 root root 0 May 12 19:21 device -> ../../../0000:00:02.0 -rw------- 1 root root 0 May 12 19:21 error drwxr-xr-x 2 root root 0 May 12 19:21 power lrwxrwxrwx 1 root root 0 May 12 19:21 subsystem -> ../../../../../class/drm -rw-r--r-- 1 root root 4096 May 12 19:21 uevent # ls -al /sys/devices/pci0000\:00/0000\:00\:02.0/drm/ drwxr-xr-x 5 root root 0 May 12 19:21 . drwxr-xr-x 13 root root 0 May 12 19:21 .. drwxr-xr-x 7 root root 0 May 12 19:21 card0 drwxr-xr-x 3 root root 0 May 12 19:21 controlD64 drwxr-xr-x 3 root root 0 May 12 19:21 renderD128 # ls -al /sys/devices/pci0000\:00/0000\:00\:02.0/ drwxr-xr-x 13 root root 0 May 12 19:21 . drwxr-xr-x 20 root root 0 May 12 19:21 .. drwxr-xr-x 3 root root 0 May 12 19:21 backlight -r--r--r-- 1 root root 4096 May 12 19:21 boot_vga -rw-r--r-- 1 root root 4096 May 12 19:21 broken_parity_status -r--r--r-- 1 root root 4096 May 12 19:21 class -rw-r--r-- 1 root root 256 May 12 19:21 config -r--r--r-- 1 root root 4096 May 12 19:21 consistent_dma_mask_bits -rw-r--r-- 1 root root 4096 May 12 19:21 d3cold_allowed -r--r--r-- 1 root root 4096 May 12 19:21 device -r--r--r-- 1 root root 4096 May 12 19:21 dma_mask_bits lrwxrwxrwx 1 root root 0 May 12 19:21 driver -> ../../../bus/pci/drivers/i915 -rw-r--r-- 1 root root 4096 May 12 19:21 driver_override drwxr-xr-x 5 root root 0 May 12 19:21 drm -rw-r--r-- 1 root root 4096 May 12 19:21 enable lrwxrwxrwx 1 root root 0 May 12 19:21 firmware_node -> ../../LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:02 drwxr-xr-x 3 root root 0 May 12 19:21 graphics drwxr-xr-x 3 root root 0 May 12 19:21 i2c-1 drwxr-xr-x 3 root root 0 May 12 19:21 i2c-2 drwxr-xr-x 3 root root 0 May 12 19:21 i2c-3 drwxr-xr-x 3 root root 0 May 12 19:21 i2c-4 drwxr-xr-x 3 root root 0 May 12 19:21 i2c-5 drwxr-xr-x 3 root root 0 May 12 19:21 i2c-6 -r--r--r-- 1 root root 4096 May 12 19:21 irq -r--r--r-- 1 root root 4096 May 12 19:21 local_cpulist -r--r--r-- 1 root root 4096 May 12 19:21 local_cpus -r--r--r-- 1 root root 4096 May 12 19:21 modalias -rw-r--r-- 1 root root 4096 May 12 19:21 msi_bus drwxr-xr-x 2 root root 0 May 12 19:21 msi_irqs drwxr-xr-x 2 root root 0 May 12 19:21 power --w--w---- 1 root root 4096 May 12 19:21 remove --w--w---- 1 root root 4096 May 12 19:21 rescan --w------- 1 root root 4096 May 12 19:21 reset -r--r--r-- 1 root root 4096 May 12 19:21 resource -rw------- 1 root root 4194304 May 12 19:21 resource0 -rw------- 1 root root 268435456 May 12 19:21 resource2 -rw------- 1 root root 268435456 May 12 19:21 resource2_wc -rw------- 1 root root 8 May 12 19:21 resource4 -rw------- 1 root root 131072 May 12 19:21 rom lrwxrwxrwx 1 root root 0 May 12 19:21 subsystem -> ../../../bus/pci -r--r--r-- 1 root root 4096 May 12 19:21 subsystem_device -r--r--r-- 1 root root 4096 May 12 19:21 subsystem_vendor -rw-r--r-- 1 root root 4096 May 12 19:21 uevent -r--r--r-- 1 root root 4096 May 12 19:21 vendor # ls -al /sys/devices/pci0000\:00/ drwxr-xr-x 20 root root 0 May 12 19:21 . drwxr-xr-x 18 root root 0 May 12 19:21 .. drwxr-xr-x 3 root root 0 May 12 19:21 0000:00:00.0 drwxr-xr-x 13 root root 0 May 12 19:21 0000:00:02.0 drwxr-xr-x 13 root root 0 May 12 19:21 0000:00:16.0 drwxr-xr-x 4 root root 0 May 12 19:21 0000:00:1a.0 drwxr-xr-x 7 root root 0 May 12 19:21 0000:00:1b.0 drwxr-xr-x 6 root root 0 May 12 19:21 0000:00:1c.0 drwxr-xr-x 7 root root 0 May 12 19:21 0000:00:1c.1 drwxr-xr-x 7 root root 0 May 12 19:21 0000:00:1c.2 drwxr-xr-x 6 root root 0 May 12 19:21 0000:00:1c.4 drwxr-xr-x 4 root root 0 May 12 19:21 0000:00:1d.0 drwxr-xr-x 4 root root 0 May 12 19:21 0000:00:1e.0 drwxr-xr-x 6 root root 0 May 12 19:21 0000:00:1f.0 drwxr-xr-x 10 root root 0 May 12 19:21 0000:00:1f.2 drwxr-xr-x 4 root root 0 May 12 19:21 0000:00:1f.3 drwxr-xr-x 3 root root 0 May 12 19:21 0000:00:1f.6 drwxr-xr-x 3 root root 0 May 12 19:21 PNP0103:00 lrwxrwxrwx 1 root root 0 May 12 19:21 firmware_node -> ../LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00 drwxr-xr-x 3 root root 0 May 12 19:21 pci_bus drwxr-xr-x 2 root root 0 May 12 19:21 power -rw-r--r-- 1 root root 4096 May 12 19:21 uevent # ls -al /sys/devices/ drwxr-xr-x 18 root root 0 May 12 19:21 . dr-xr-xr-x 13 root root 0 May 12 19:21 .. drwxr-xr-x 11 root root 0 May 12 19:21 LNXSYSTM:00 drwxr-xr-x 3 root root 0 May 12 19:21 breakpoint drwxr-xr-x 5 root root 0 May 12 19:21 cpu drwxr-xr-x 5 root root 0 May 12 19:21 cstate_core drwxr-xr-x 5 root root 0 May 12 19:21 cstate_pkg drwxr-xr-x 3 root root 0 May 12 19:21 intel_bts drwxr-xr-x 5 root root 0 May 12 19:21 msr drwxr-xr-x 20 root root 0 May 12 19:21 pci0000:00 drwxr-xr-x 10 root root 0 May 12 19:21 pci0000:ff drwxr-xr-x 19 root root 0 May 12 19:21 platform drwxr-xr-x 9 root root 0 May 12 19:21 pnp0 drwxr-xr-x 3 root root 0 May 12 19:21 software drwxr-xr-x 6 root root 0 May 12 19:21 system drwxr-xr-x 3 root root 0 May 12 19:21 tracepoint drwxr-xr-x 5 root root 0 May 12 19:21 uncore drwxr-xr-x 18 root root 0 May 12 19:21 virtual