Radeon R7 240 PCIe not detected on Ubuntu 20.04

Support & Help Requests Hardware
1

I have a desktop running Ubuntu 20.04 with a Radeon R7 240 as a secondary graphics card however the system will not recognise it, can anyone help, please? here is the terminal output for lspci

00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation H61 Express Chipset LPC Controller (rev 05)
00:1f.2 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family Desktop SATA Controller (IDE mode, ports 0-3) (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
00:1f.5 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family Desktop SATA Controller (IDE mode, ports 4-5) (rev 05)
02:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 04)
03:04.0 Multimedia audio controller: C-Media Electronics Inc CMI8788 [Oxygen HD Audio]
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 09)

2

you may need to enable the PCIe graphics card from your BIOS.

3

There is no option to adjust or activate pice slots in the ufie bios

4

Check the BIOS again, is the slot disabled?
re-seat the card, maybe there is dust.
What the m/b model? is it compat with AMD cards?

5

There may also be switchable graphics in BIOS/UEFI, look for the setting in BIOS/UEFI that controls GPU switching and see which one is enabled. On this laptop (Acer Aspire) I only have the onboard Intel graphics active as the AMD GPU chip runs hot on this laptop!. :smile:

If it is a standard PC, do you have the cable connected to the correct GPU output?. :thinking:

6

I cannot find any setting in the bios to activate the card or the card slot.
The MB is a P8H61-MX R2.0 with an Intel Pentium CPU G645 @ 2.90GHz chip

7

Check the manual which may help?.

Do you have the monitor cable connected to the Radeon GPU or to the onboard graphics?. :grinning:

8

I have tried booting the system with the VGA and HDMI monitors connected to the Radeon GPU together and separately as well as with the VGA connected to the on board GPU and the HDMI connected to the Radeon GPU, only the VGA connection to the onboard GPU provides an output.

9

Then you must look for the switch in BIOS/UEFI which controls which graphics port will be used for graphics output!. :thinking:

Once selected, you will need to put the cable in that port when you reboot after you save the changes you made in BIOS/UEFI. :grinning: