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My ubuntu 18.04 with AMD Topaz XT Radeon R7 does not wake up after suspend. In ubuntu 16.04, I had faced same problem. I have found that amdgpu driver disturbing in suspend. When I blacklist amdgpu driver, suspend works fine.

How can I get rid of such trouble?


Output of

sudo lshw -C video -C cpu

  *-cpu                     
       description: CPU
       product: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz
       vendor: Intel Corp.
       physical id: 4
       bus info: cpu@0
       version: Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz
       serial: To Be Filled By O.E.M.
       slot: U3E1
       size: 500MHz
       capacity: 2800MHz
       width: 64 bits
       clock: 100MHz
       capabilities: x86-64 fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp cpufreq
       configuration: cores=2 enabledcores=2 threads=4
  *-display
       description: VGA compatible controller
       product: HD Graphics 520
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 07
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:128 memory:c1000000-c1ffffff memory:a0000000-afffffff ioport:5000(size=64) memory:c0000-dffff
  *-display
       description: Display controller
       product: Topaz XT [Radeon R7 M260/M265 / M340/M360 / M440/M445]
       vendor: Advanced Micro Devices, Inc. [AMD/ATI]
       physical id: 0
       bus info: pci@0000:01:00.0
       version: 83
       width: 64 bits
       clock: 33MHz
       capabilities: pm pciexpress msi bus_master cap_list rom
       configuration: driver=amdgpu latency=0
       resources: irq:129 memory:b0000000-bfffffff memory:c0000000-c01fffff ioport:4000(size=256) memory:c2300000-c233ffff memory:c2340000-c235ffff




Output of

lspci -vnnn | perl -lne 'print if /^\d+:.+([\S+:\S+])/' | grep VGA

00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 520 [8086:1916] (rev 07) (prog-if 00 [VGA controller])

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