Eu tenho um sistema operacional dual no meu laptop. O Ubuntu não consegue detectar minha segunda tela. Onde o Windows 10 pode detectar. Abaixo estão algumas das informações do meu laptop e a saída de alguns comandos do Ubuntu que podem ser úteis.
Laptop modelo: PC Notebook HP 15-G002AX Processador AMD
yashwant@yashwant-HP-15-Notebook-PC:~$ uname -sra
Linux yashwant-HP-15-Notebook-PC 3.13.0-129-generic #178-Ubuntu SMP Fri Aug 11 12:48:20 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
yashwant@yashwant-HP-15-Notebook-PC:~$ lspci -k
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1566
Subsystem: Hewlett-Packard Company Device 22ce
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Mullins [Radeon R4/R5 Graphics] (rev 05)
Subsystem: Hewlett-Packard Company Device 22ce
00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Kabini HDMI/DP Audio
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: snd_hda_intel
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 156b
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
Kernel driver in use: pcieport
00:02.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
Kernel driver in use: pcieport
00:02.4 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
Kernel driver in use: pcieport
00:02.5 PCI bridge: Advanced Micro Devices, Inc. [AMD] Family 16h Processor Functions 5:1
Kernel driver in use: pcieport
00:08.0 Encryption controller: Advanced Micro Devices, Inc. [AMD] Device 1537
Subsystem: Advanced Micro Devices, Inc. [AMD] Device 1537
00:10.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB XHCI Controller (rev 11)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: xhci_hcd
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode]
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: ahci
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: ehci-pci
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD] FCH USB EHCI Controller (rev 39)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: ehci-pci
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 42)
Subsystem: Hewlett-Packard Company Device 22ce
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 02)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: snd_hda_intel
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 11)
Subsystem: Hewlett-Packard Company Device 22ce
00:14.7 SD Host controller: Advanced Micro Devices, Inc. [AMD] FCH SD Flash Controller (rev 01)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: sdhci-pci
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1580
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1581
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1582
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1583
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1584
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 1585
01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun LE [Radeon HD 8550M / R5 M230]
Subsystem: Hewlett-Packard Company Device 22ce
02:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: rtsx_pci
03:00.0 Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01)
Subsystem: Hewlett-Packard Company Device 217f
Kernel driver in use: ath9k
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
Subsystem: Hewlett-Packard Company Device 22ce
Kernel driver in use: r8169
lspci -k| grep -i 'display'
01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun LE [Radeon HD 8550M / R5 M230]
yashwant@yashwant-HP-15-Notebook-PC:~$ xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1366 x 768, current 1366 x 768, maximum 1366 x 768
default connected primary 1366x768+0+0 0mm x 0mm
1366x768 76.0*
Quando olhou para xrandr. Apenas não detecta o segundo visor.
Qualquer ajuda seria apreciada.
Obrigado antecipadamente