Eu comprei recentemente
BL3201PT , que é capaz de fornecer 4K @ 60Hz. Eu conectei com DP. A saída de xrandr
mostra o seguinte:
$ xrandr -v
xrandr program version 1.4.1
Server reports RandR version 1.4
$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767
eDP2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.1*+ 59.9
1680x1050 60.0 59.9
...
VGA1 disconnected (normal left inverted right x axis y axis)
DP1 connected (normal left inverted right x axis y axis)
3840x2160 30.0
2560x1440 60.0
1920x1080 60.0 50.0 59.9
....
Diz-me que é apenas 30Hz. Eu tentei definir um novo modo, mas isso me dá erro.
X Error of failed request: BadName (named color or font does not exist)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 16 (RRCreateMode)
Serial number of failed request: 59
Current serial number in output stream: 59
Placas gráficas:
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
01:00.0 VGA compatible controller: NVIDIA Corporation GK106GLM [Quadro K2100M] (rev a1)
14:35:53 ~
$
Usando hortelã 17. Alguma dica?
Atualização: BTW, eu tenho uma inicialização dupla na máquina e no segundo sistema operacional (Windows) a taxa de atualização é de 60Hz como deveria ser.
Saída de dpkg -l | grep xfont
:
$ dpkg -l | grep xfont
ii libxfont1:amd64 1:1.4.7-1ubuntu0.2 amd64 X11 font rasterisation library
ii xfonts-base 1:1.0.3 all standard fonts for X
ii xfonts-encodings 1:1.0.4-1ubuntu1 all Encodings for X.Org fonts
ii xfonts-mathml 6ubuntu1 all Type1 Symbol font for MathML
ii xfonts-scalable 1:1.0.3-1 all scalable fonts for X
ii xfonts-utils 1:7.7+1 amd64 X Window System font utility programs
Algumas informações adicionais:
$ dpkg -l | grep -i nvidia
ii nvidia-settings 370.28-0ubuntu0~gpu14.04.1 amd64 Tool for configuring the NVIDIA graphics driver
10:37:23 ~
$ lspci -nnk | grep "VGA\|'Kern'\|3D\|Display" -A2
00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06)
Subsystem: Lenovo Device [17aa:2211]
Kernel driver in use: i915
--
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK106GLM [Quadro K2100M] [10de:11fc] (rev a1)
Subsystem: Lenovo Device [17aa:2211]
Kernel driver in use: nouveau
10:37:32 ~
$