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--- ubuntu:gpu:drivers:get_the_currently_used_graphics_driver [2023/06/25 09:24] – created peter
+++ ubuntu:gpu:drivers:get_the_currently_used_graphics_driver [2023/06/27 08:14] (current) – [Determine the PCI Bus] peter
@@ Line 1: / Line 1: @@
 ====== Ubuntu - GPU - Drivers - Get the currently used graphics driver ======
+===== Using lspci =====
+<code bash>
+lspci -k | grep -A 3 -E "(VGA|3D)"
+</code>
+returns:
+<code bash>
+c:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 744c (rev c8)
+	Subsystem: Gigabyte Technology Co., Ltd Device 240e
+	Kernel driver in use: amdgpu
+	Kernel modules: amdgpu
+</code>
+<WRAP info>
+**NOTE:**  This shows that the kernel driver is **amdgpu**.
+  * This indicates an AMD GPU.
+</WRAP>
+----
+===== Using lshw =====
+<code bash>
+sudo lshw -c video
+</code>
+returns:
+<code bash>
+  *-display
+       description: VGA compatible controller
+       product: Navi 31 [Radeon RX 7900 XT/7900 XTX]
+       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
+       physical id: 0
+       bus info: pci@0000:0c:00.0
+       logical name: /dev/fb0
+       version: c8
+       width: 64 bits
+       clock: 33MHz
+       capabilities: pm pciexpress msi vga_controller bus_master cap_list rom fb
+       configuration: depth=32 driver=amdgpu latency=0 resolution=3440,1440
+       resources: irq:128 memory:e0000000-efffffff memory:f0000000-f01fffff ioport:e000(size=256) memory:f7b00000-f7bfffff memory:c0000-dffff
+</code>
+<WRAP info>
+**NOTE:**  See the **configuration** line near the bottom.
+  * This shows that the kernel driver is **amdgpu**.
+</WRAP>
+----
+===== Check the kernel modules =====
+==== Determine the PCI Bus ====
+<code bash>
+lspci | grep -i vga
+</code>
+returns:
+<code bash>
+c:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900 XTX] (rev c8)
+</code>
+<WRAP info>
+**NOTE:**  This shows the unique PCI Bus address of 0c:00.0.
+</WRAP>
+----
+==== Use the PCI Bus to check what kernel modules are being used ====
+<code bash>
+lspci -s 0c:00.0 -v
+</code>
+returns:
+<code bash>
+c:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Navi 31 [Radeon RX 7900 XT/7900 XTX] (rev c8) (prog-if 00 [VGA controller])
+	Subsystem: Gigabyte Technology Co., Ltd Device 240e
+	Flags: bus master, fast devsel, latency 0, IRQ 129, IOMMU group 27
+	Memory at f000000000 (64-bit, prefetchable) [size=32G]
+	Memory at f800000000 (64-bit, prefetchable) [size=256M]
+	I/O ports at e000 [size=256]
+	Memory at fcb00000 (32-bit, non-prefetchable) [size=1M]
+	Expansion ROM at fcc00000 [disabled] [size=128K]
+	Capabilities: <access denied>
+	Kernel driver in use: amdgpu
+	Kernel modules: amdgpu
+</code>
+<WRAP info>
+**NOTE:**  This shows that the kernel driver is **amdgpu**.
+  * This indicates an AMD GPU.
+</WRAP>
+----