所以我从朋友那里得到了这台旧上网本，她希望我让它可以使用。我安装了 Xubuntu，但似乎 BIOS 中的 ESH 设置（应该将 CPU 超频至 30%）不起作用！当我执行 cat /proc/cpuinfo|grep MHz 时，我仍然看到 1300 左右的数字，而不是我希望的 1.74GHz，即使 CPU 负载很高。我安装了这个 TLP 包（http://www.webupd8.org/2013/04/improve-power-usage-battery-life-in.html) 认为这是使 ESH 工作所必需的，但结果还是一样。如果我运行sudo tlp-stat-p 我得到了
--- TLP 1.1 --------------------------------------------
+++ Processor
CPU model = Intel(R) Atom(TM) CPU Z520 @ 1.33GHz
/sys/devices/system/cpu/cpu0/cpufreq/scaling_driver = acpi-cpufreq
/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor = ondemand
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors = conservative ondemand userspace powersave performance schedutil
/sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq = 800000 [kHz]
/sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq = 1333000 [kHz]
/sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies = 1333000 1067000 800000 [kHz]
/sys/devices/system/cpu/cpu1/cpufreq/scaling_driver = acpi-cpufreq
/sys/devices/system/cpu/cpu1/cpufreq/scaling_governor = ondemand
/sys/devices/system/cpu/cpu1/cpufreq/scaling_available_governors = conservative ondemand userspace powersave performance schedutil
/sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq = 800000 [kHz]
/sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq = 1333000 [kHz]
/sys/devices/system/cpu/cpu1/cpufreq/scaling_available_frequencies = 1333000 1067000 800000 [kHz]
/sys/devices/system/cpu/cpufreq/boost = (not available)
x86_energy_perf_policy: program not installed.
/sys/module/workqueue/parameters/power_efficient = Y
/proc/sys/kernel/nmi_watchdog = 0
难道这个 boost (不可用) 不是问题所在吗？有什么办法可以让这个 CPU 运行得更快吗？不幸的是，YouTube 即使是 360p 也无法观看，就像这样 :-\
如果我只是将 scaling_max_freq 的一些数字放入 TLP 配置 /etc/default/tlp 中会怎么样？我可以在那里输入任意数量的 MHz 吗？它会接受吗？
sudo lshw -class display
*-display
description: VGA compatible controller
product: System Controller Hub (SCH Poulsbo) Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
glxinfo | grep -i "vendor\|rendering"
direct rendering: Yes
server glx vendor string: SGI
client glx vendor string: Mesa Project and SGI
Vendor: VMware, Inc. (0xffffffff)
OpenGL vendor string: VMware, Inc.
version: 07
width: 32 bits
clock: 33MHz
capabilities: pm msi vga_controller bus_master cap_list rom
configuration: driver=gma500 latency=0
resources: irq:22 memory:f3f80000-f3ffffff ioport:c880(size=8) memory:d0000000-dfffffff memory:f3f40000-f3f7ffff memory:c0000-dffff
lspci -k | grep -EA3 'VGA|3D|Display'
00:02.0 VGA compatible controller: Intel Corporation System Controller Hub (SCH Poulsbo) Graphics Controller (rev 07)
Subsystem: ASUSTeK Computer Inc. System Controller Hub (SCH Poulsbo) Graphics Controller
Kernel driver in use: gma500
Kernel modules: gma500_gfx