我买了一台装有 Windows 的新笔记本电脑,但决定尝试一下 Ubuntu。
笔记本电脑规格:
- 英特尔® 酷睿™ i7-10875H CPU
- 16GB 内存
- Nvidia RTX 3060 笔记本 GPU
使用:
- Ubuntu 21.04(完全更新)
- 5.11.0-37-通用内核
为了延长电池寿命,我一直在混合图形模式下使用笔记本电脑(笔记本电脑 BIOS 中的 MSHYBRID 所示)
问题是,在 Ubuntu(或我尝试过的任何其他 Linux 发行版)中,屏幕刷新率停留在 40HZ,即使笔记本电脑支持 165HZ。在显示设置和 xrandr 输出中,165HZ 显示为选定的速率。不过,我可以清楚地看到刷新率要低得多,因为 glxgears 也显示了这一点。
当我将 BIOS 中的可切换显卡设置更改为“仅 dGPU”时,问题不再出现。选择此选项后,显示器可以正确设置并使用 165HZ。但当将其设置为“仅 iGPU”或“MSYHBRID”时,会出现同样的问题。
我试过了:
- 将刷新率设置为 40HZ,然后恢复为 165HZ(无效果)
- 使用较低的分辨率并选择 60HZ(仍然以 40HZ 显示)
- 使用 nouveau 驱动程序(相同行为)
- 使用专有的 NVIDIA 驱动程序(相同行为)
- 切换到 Wayland(设置中增加了选择 60HZ 的额外选项,但也没有任何效果)
- 使用各种发行版,例如 Fedora、Manjaro 等。(每个发行版的行为相同)
Xrandr 输出:
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
eDP-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
2560x1440 165.00*+ 40.00 +
1920x1440 85.00 75.00 60.00
1856x1392 75.00 60.01
1792x1344 75.00 60.01
2048x1152 59.99 59.98 59.90 59.91
1920x1200 59.88 59.95
1920x1080 60.01 59.97 59.96 59.93
1600x1200 85.00 75.00 70.00 65.00 60.00
1680x1050 84.94 74.89 69.88 59.95 59.88
1600x1024 60.17
1400x1050 85.00 74.76 70.00 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 85.02 75.02 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 85.00 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 100.00 85.06 85.00 75.00 75.00 70.00 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 85.00 75.05 60.04 85.00 75.03 70.07 60.00
1024x768i 86.96
960x720 85.00 75.00 60.00
928x696 75.00 60.05
896x672 75.05 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
832x624 74.55
960x540 59.96 59.99 59.63 59.82
800x600 85.00 75.00 70.00 65.00 60.00 85.14 72.19 75.00 60.32 56.25
840x525 85.02 74.96 69.88 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 85.08 74.76 70.06 59.98
800x450 59.95 59.82
640x512 85.02 75.02 60.02
720x450 59.89
700x450 59.96 59.88
640x480 85.09 60.00 85.01 72.81 75.00 59.94
720x405 59.51 58.99
720x400 85.04
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98 85.08
576x432 100.11 85.15 85.09 75.00 75.00 70.00 60.06
640x360 59.86 59.83 59.84 59.32
640x350 85.08
512x384 85.00 75.03 70.07 60.00
512x384i 87.06
512x288 60.00 59.92
416x312 74.66
480x270 59.63 59.82
400x300 85.27 72.19 75.12 60.32 56.34
432x243 59.92 59.57
320x240 85.18 72.81 75.00 60.05
360x202 59.51 59.13
360x200 85.04
320x200 85.27
320x180 59.84 59.32
320x175 85.27
DP-1-0 disconnected (normal left inverted right x axis y axis)
DP-1-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-0 disconnected (normal left inverted right x axis y axis)
DP-1-2 disconnected (normal left inverted right x axis y axis)
lspci | grep VGA 输出:
00:02.0 VGA compatible controller: Intel Corporation CometLake-H GT2 [UHD Graphics] (rev 05)
01:00.0 VGA compatible controller: NVIDIA Corporation GA106M [GeForce RTX 3060 Mobile / Max-Q] (rev a1)
glxgears 输出:
Running synchronized to the vertical refresh. The framerate should be
approximately the same as the monitor refresh rate.
268 frames in 5.0 seconds = 53.471 FPS
201 frames in 5.0 seconds = 40.000 FPS
201 frames in 5.0 seconds = 40.001 FPS
201 frames in 5.0 seconds = 40.000 FPS
201 frames in 5.0 seconds = 40.001 FPS
201 frames in 5.0 seconds = 40.001 FPS
让我澄清一下,在 Windows 中,所有 3 个 BIOS 设置均按预期工作,刷新率为 165HZ。而且我也一直在使用笔记本电脑的内部显示屏。
任何帮助都值得感激。
答案1
同样有此问题,请尝试英特尔模式设置。