Black screen after restart on AMD radeon graphics vega 7

Hi all,
I have a problem with amdgpu driver. After every reboot I take black screen and nothing works. Only after hard reset, pc boots into OS. Do you have some idea? Help me to resolve this. Thanks.

Here are some outputs:

lsb_release -a

LSB Version:	n/a
Distributor ID:	ManjaroLinux
Description:	Manjaro Linux
Release:	21.0.4
Codename:	Ornara

lspci -nnk | egrep "VGA|3D|Display" -A2

05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c2)
	DeviceName: Onboard IGD
	Subsystem: Hewlett-Packard Company Device [103c:8730]

glxinfo | grep render

direct rendering: Yes
    GLX_MESA_query_renderer, GLX_MESA_swap_control, GLX_OML_swap_method, 
    GLX_MESA_copy_sub_buffer, GLX_MESA_query_renderer, GLX_MESA_swap_control, 
Extended renderer info (GLX_MESA_query_renderer):
OpenGL renderer string: AMD RENOIR (DRM 3.40.0, 5.12.1-2-MANJARO, LLVM 11.1.0)
    GL_ARB_compute_variable_group_size, GL_ARB_conditional_render_inverted, 
    GL_INTEL_blackhole_render, GL_KHR_blend_equation_advanced, 
    GL_NV_conditional_render, GL_NV_copy_image, GL_NV_depth_clamp, 
    GL_ARB_compute_variable_group_size, GL_ARB_conditional_render_inverted, 
    GL_INGR_blend_func_separate, GL_INTEL_blackhole_render, 
    GL_NV_compute_shader_derivatives, GL_NV_conditional_render, 
    GL_EXT_render_snorm, GL_EXT_robustness, GL_EXT_sRGB_write_control, 
    GL_INTEL_blackhole_render, GL_KHR_blend_equation_advanced, 
    GL_NV_compute_shader_derivatives, GL_NV_conditional_render, 
    GL_OES_element_index_uint, GL_OES_fbo_render_mipmap, 

Hello @fenrir :wink:

Possible you run into the gdm bug. It affects most the amdgpu as i searched.

Just add ExecStartPre=/bin/sleep 2 to the gdm.service. This will force the service to wait 2 seconds before starting gdm.

sudo systemctl edit gdm.service

then add there

ExecStartPre=/bin/sleep 2

And at the next reboot it should wait 2 sec before running gdm.

1 Like

Thank you very much for good tip. That solved my problem. I had to only change sleeping time from 2 to 10. :partying_face:

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