"Software Rendering Mode" with Radeon R7 250X

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tankbard
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"Software Rendering Mode" with Radeon R7 250X

Post by tankbard » Sat May 05, 2018 4:02 pm

I recently upgraded my kernel to find that I am now running in software rendering mode. I have looked on the forums to find that there is no driver support for my particular combination of kernel + graphics card. Since I do not remember my computer's performance always being this bad, I am looking to downgrade my kernel/drivers so that my video card can be used properly again. How would I go about identifying the combination of settings that would work for me? (I know that there's no substitute for actually performing the installation and seeing if it works, but I should like to at least be in the right ballpark and/or have a list of feasible options.)

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>> inxi -SGx
System:    Host: brochantite Kernel: 4.13.0-38-generic x86_64 (64 bit gcc: 5.4.0)
           Desktop: Cinnamon 3.6.7 (Gtk 3.18.9-1ubuntu3.3) Distro: Linux Mint 18.3 Sylvia
Graphics:  Card: Advanced Micro Devices [AMD/ATI] Cape Verde XT [Radeon HD 7770/8760 / R7 250X]
           bus-ID: 01:00.0
           Display Server: X.Org 1.18.4 drivers: fbdev (unloaded: vesa) Resolution: 1920x1080@77.00hz
           GLX Renderer: llvmpipe (LLVM 5.0, 128 bits)
           GLX Version: 3.0 Mesa 17.2.8 Direct Rendering: Yes
I set up this box on the 2nd of February this year (Mint 18.3, Kernel 4.10), so I don't think I should need to drop down to 17.x. I remember fussing around with amdgpu-pro and mesa-glx before getting things running relatively smoothly, and I think it was the latter that I settled on? But my memory is poor, and this configuration process frequently feels like stacking things in random orders and very carefully Not Touching it once some permutation works.

deepakdeshp
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Re: "Software Rendering Mode" with Radeon R7 250X

Post by deepakdeshp » Sun May 06, 2018 1:29 pm

You can always boot to the old working kernel by booting it choosing the grub advanced boot option.
Once you boot it, you can delete the non working kernel
If I have helped you solve a problem, please add [SOLVED] to your first post title, it helps other users looking for help, and keeps the forum clean.
I am using Mint 19 Cinnamon 64 bit with AMD A8/7410 processor . Memory 8GB

tankbard
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Re: "Software Rendering Mode" with Radeon R7 250X

Post by tankbard » Wed May 16, 2018 4:07 am

Tried that, along with a laundry list of other things (trying various versions of amdgpu, messing with different combinations of the drivers that looked relevant). Eventually I just gave up and ordered an NVIDIA card (GTX 1050), which has been working just fine out of the box.

Thanks for your assistance.

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