我在 Toshiba Portege Z30-C Z30-C 上运行 Ubuntu 17.04。两天前，我遇到了 32 秒不活动后屏幕变黑的问题。如果正在播放音频，它会继续播放，但屏幕变黑。该命令xset -q产生以下输出：
Keyboard Control:
auto repeat: on key click percent: 0 LED mask: 00000000
XKB indicators:
00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off
03: Compose: off 04: Kana: off 05: Sleep: off
06: Suspend: off 07: Mute: off 08: Misc: off
09: Mail: off 10: Charging: off 11: Shift Lock: off
12: Group 2: off 13: Mouse Keys: off
auto repeat delay: 600 repeat rate: 25
auto repeating keys: 00ffffffdffffbbf
fadfffefffedffff
9fffffffffffffff
fff7ffffffffffff
bell percent: 50 bell pitch: 400 bell duration: 100
Pointer Control:
acceleration: 20/10 threshold: 4
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 0 cycle: 600
Colors:
default colormap: 0x20 BlackPixel: 0x0 WhitePixel: 0xffffff
Font Path:
/usr/share/fonts/X11/misc,/usr/share/fonts/X11/Type1,built-ins
DPMS (Energy Star):
Standby: 0 Suspend: 0 Off: 0
DPMS is Disabled
因此罪魁祸首不是 DPMS，正如这里所说的：ubuntu 16.04 LTS 64bit - 屏幕每 15 秒变黑一次。
有人能帮忙解决这个恼人的问题吗？
编辑：感谢 Pilot6 的关注！该lspci -k | grep -EA3 'VGA|3D|Display'命令产生：
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 520 (rev 07)
Subsystem: Toshiba America Info Systems HD Graphics 520
Kernel driver in use: i915
Kernel modules: i915