How can I know if my dual-graphics ProBook 4740s is using AMD Radeon as primary video card?

[lazzar]

Hi,

Thanks in advance for your help. I'm using HP ProBook 4740s which comes with two graphic cards:
CPU-integrated Intel HD Graphics 3000 and AMD Radeon HD 7650M. I would like to know if my system
is actually using the dedicated GPU (Radeon) in my everyday use.

Copy/Paste of System Info:

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I'm using Linux Mint 18.3 Cinnamon 64-bit
Cinnamon version 3.6.6
Linux Kernel 4.4.0-53-generic
Processor Intel Core i5-3210M CPU @ 2.50GHz x 2
Graphics Card: Intel Corporation 3rd Gen Core processor Graphics Controller
Graphics Card: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M]

Here is the inxi -Fx log:

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System:    Host: vl-HP-ProBook-4740s Kernel: 4.4.0-53-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.6 (Gtk 3.18.9-1ubuntu3.3)
           Distro: Linux Mint 18.3 Sylvia
Machine:   System: Hewlett-Packard (portable) product: HP ProBook 4740s v: A1018C1100
           Mobo: Hewlett-Packard model: 1846 v: KBC Version 58.21
           Bios: Hewlett-Packard v: 68IRR Ver. F.50 date: 08/04/2014
CPU:       Dual core Intel Core i5-3210M (-HT-MCP-) cache: 3072 KB
           flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9977
           clock speeds: max: 3100 MHz 1: 1509 MHz 2: 1741 MHz 3: 1462 MHz
           4: 1396 MHz
Graphics:  Card-1: Intel 3rd Gen Core processor Graphics Controller
           bus-ID: 00:02.0
           Card-2: Advanced Micro Devices [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M]
           bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: ati,radeon,intel (unloaded: fbdev,vesa)
           Resolution: 1600x900@60.00hz
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile
           GLX Version: 3.0 Mesa 11.2.0 Direct Rendering: Yes
Audio:     Card Intel 7 Series/C210 Series Family High Definition Audio Controller
           driver: snd_hda_intel bus-ID: 00:1b.0
           Sound: Advanced Linux Sound Architecture v: k4.4.0-53-generic
Network:   Card-1: Ralink RT3290 Wireless 802.11n 1T/1R PCIe
           driver: rt2800pci v: 2.3.0 bus-ID: 04:00.0
           IF: wlo1 state: up mac: 68:94:23:b6:5a:c9
           Card-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           driver: r8169 v: 2.3LK-NAPI port: 2000 bus-ID: 05:00.0
           IF: enp5s0 state: down mac: b4:b5:2f:7d:51:b7
Drives:    HDD Total Size: 870.2GB (89.1% used)
           ID-1: /dev/sda model: Samsung_SSD_840 size: 120.0GB
           ID-2: /dev/sdb model: Hitachi_HTS54757 size: 750.2GB
Partition: ID-1: / size: 23G used: 21G (94%) fs: ext4 dev: /dev/sda5
           ID-2: swap-1 size: 6.32GB used: 1.05GB (17%) fs: swap dev: /dev/sda6
RAID:      No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors:   System Temperatures: cpu: 63.0C mobo: 0.0C gpu: 56.5
           Fan Speeds (in rpm): cpu: N/A
Info:      Processes: 273 Uptime: 1:38 Memory: 4159.3/5848.9MB
           Init: systemd runlevel: 5 Gcc sys: 5.4.0
           Client: Shell (bash 4.3.481) inxi: 2.2.35

[lazzar]

Forgot to include the output of lshw -C video:

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*-display               
       description: VGA compatible controller
       product: 3rd Gen Core processor Graphics Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:32 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:4000(size=64)

and lspci|grep VGA

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00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M] (rev ff)

and inxi -G

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Graphics:  Card-1: Intel 3rd Gen Core processor Graphics Controller
           Card-2: Advanced Micro Devices [AMD/ATI] Thames [Radeon HD 7550M/7570M/7650M]
           Display Server: X.Org 1.18.4 drivers: ati,radeon,intel (unloaded: fbdev,vesa)
           Resolution: 1600x900@60.00hz
           GLX Renderer: Mesa DRI Intel Ivybridge Mobile GLX Version: 3.0 Mesa 11.2.0

[thx-1138]

..................

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GLX Renderer: Mesa DRI Intel Ivybridge Mobile

..................

Ie. it uses Intel graphics (you could also verify via glxgears -info | grep RENDERER). For hybrid graphics, look here & here.