在Firefly RK-3288板上设置显示分辨率的问题

Question

我有一块RK-3288萤火板(它运行的是Ubuntu 14.04.5LTS)，我遇到了在HDMI上获得正确显示分辨率的问题。看起来我得到了720p，然后又被放大到1080p，看起来很糟糕。如果我插入一条VGA电缆，它看起来很好。

我试过将HDMI调到1080p，但我遇到了问题。看起来xrandr没有正确检测HDMI端口：

sudo xrandr --newmode "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
xrandr: Failed to get size of gamma for output default


sudo xrandr --addmode HDMI-0 1920x1080_60.60
xrandr: Failed to get size of gamma for output default
xrandr: cannot find output "HDMI-0"


sudo xrandr --query
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
   1920x1080      60.0* 
  1920x1080_60.00 (0x6c)  173.0MHz
        h: width  1920 start 2048 end 2248 total 2576 skew    0 clock   67.2KHz
        v: height 1080 start 1083 end 1088 total 1120           clock   60.0Hz

我已经用"apt-get update/upgrade“下载了所有可用的更新。我尝试过的其他命令：

firefly@firefly:~$ sudo lspci
pcilib: Cannot open /proc/bus/pci
lspci: Cannot find any working access method.

firefly@firefly:~$ sudo lshw -C display

firefly@firefly:~$ cat /etc/X11/xorg.conf.d/*
Section "InputClass"
        Identifier "gslX680 evdev touchscreen"
        MatchProduct    "gslX680"
        MatchDevicePath "/dev/input/event*"
        Option "EmulateThirdButton" "true"
        Option "EmulateThirdButtonTimeout" "500"
        Option "EmulateThirdButtonMoveThreshold" "50"
        Driver "evdev"
EndSection
Section "InputClass"
        Identifier "evdev gsl680"
        #MatchIsTouchscreen "on"
        MatchProduct "gsl680"
        MatchDevicePath "/dev/input/event*"
        Driver "evdev"
EndSection

耽误您时间，实在对不起

Answer 1

通过将我的Linux dist升级到Ubuntu 16.04 (Beta)发行版，我自己解决了这个问题，该发行版是为Firefly板移植的