我在 Dell Ultrasharp U3219Q 32 英寸显示器上运行最新的 Archlinux,分辨率为 3840x2160。我的显卡是 NVIDIA GeForce GTX 1050 Ti,内存为 4GB,我在 X11 上运行专有 blob 驱动程序版本 515.57,带有 GNOME。显示器通过 DP1.4 电缆与 DisplayPort 端口连接。
监视器的文档第 15 页显示,在该分辨率下它能够达到的最大频率为 60hz。本网站(不是 nvidia 的网站)显示 GPU 应该能够处理 7680 x 4320 @60 Hz。但是 GNOME 设置菜单和 xrandr 认为最大值是 30hz:
$ lspci -knn | grep VGA -A1
02:00.0 VGA compatible controller [0300]: NVIDIA Corporation GP107 [GeForce GTX 1050 Ti] [10de:1c82] (rev a1)
Subsystem: ASUSTeK Computer Inc. Device [1043:85d1]
$ xrandr -q
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767
DVI-D-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 697mm x 392mm
3840x2160 29.98*+
2560x1440 59.95
2048x1280 59.96
2048x1080 24.00
1920x1200 59.88
1920x1080 60.00 59.94 50.00 23.98
1600x1200 60.00
1600x900 60.00
1280x1024 75.02 60.02
1280x720 59.94 50.00
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
DP-1 disconnected (normal left inverted right x axis y axis)
DVI-D-1 disconnected (normal left inverted right x axis y axis)
我该如何修复这个问题并获得 60hz?