No display power management: Intel i915 display
Running Buster as updated. I recently had occasion to reboot my Lenovo
T520, and now the power management will not shut the display off. I
conjecture that some update in the last two months broke things
(again!).
I tried both the power management in xscreensaver (5.42+dfsg1-1) and
xfce4-power-manager (1.6.1-1).
root@jhegaala:~# lspci -vs 00:02.0
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo 2nd Generation Core Processor Family Integrated Graphics Controller (ThinkPad T520)
Flags: bus master, fast devsel, latency 0, IRQ 27
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 6000 [size=64]
[virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
root@jhegaala:~# cat /etc/debian_version
10.3
root@jhegaala:~# lsb_release -a
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 10 (buster)
Release: 10
Codename: buster
root@jhegaala:~#
--
Does anybody read signatures any more?
https://charlescurley.com
https://charlescurley.com/blog/
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