1 Reply Latest reply on Dec 14, 2017 8:33 AM by charled

    ubuntu 16.04.3 linux amdgpu


      I'm having trouble getting my Carrizo chip to work on this linux distro with the amdgpu driver. Sometimes I get a blank screen and sometimes I get a normal video display that eventually goes blank. The laptop does not lock up since I can use SSH to log in from another computer and reboot the computer which may or may not give a login screen. The problem repeats itself. Here is the output from lspci and uname:



      00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Carrizo (rev c5)


      Linux pavilion 4.12.6-041206-generic #201708111232 SMP Fri Aug 11 16:34:18 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux




      Architecture:          x86_64

      CPU op-mode(s):        32-bit, 64-bit

      Byte Order:            Little Endian

      CPU(s):                4

      On-line CPU(s) list:   0-3

      Thread(s) per core:    2

      Core(s) per socket:    2

      Socket(s):             1

      NUMA node(s):          1

      Vendor ID:             AuthenticAMD

      CPU family:            21

      Model:                 96

      Model name:            AMD A10-8700P Radeon R6, 10 Compute Cores 4C+6G

      Stepping:              1

      CPU MHz:               1600.000

      CPU max MHz:           1800.0000

      CPU min MHz:           1300.0000

      BogoMIPS:              3592.19

      Virtualization:        AMD-V

      L1d cache:             32K

      L1i cache:             96K

      L2 cache:              1024K

      NUMA node0 CPU(s):     0-3

      Flags:                 fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good acc_power nopl nonstop_tsc cpuid extd_apicid aperfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext perfctr_core perfctr_nb bpext ptsc mwaitx cpb hw_pstate vmmcall fsgsbase bmi1 avx2 smep bmi2 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushbyasid decodeassists pausefilter pfthreshold avic overflow_recov


      If I use the boot option nomodeset the display is stable but the resolution is less than desired.

        • Re: ubuntu 16.04.3 linux amdgpu

          Same for me on a HP Probook 455 G3 A10-8700p, same revision Carrizo rc5, using Arch (Linux 4.13) or latest Ubuntu 17.10.


          I can't see anything particular related to this issue in journalctl (only powerplay min_core_set_clock_not_set)


          Something strange : when I power the notebook on and wait a moment before lauching Linux (let's say if I "pause" the boot process for 5 minutes  in the boot loader, of if I visit bios setup (but change nothing), when I run Linux, the screen doesn't turn blank during the boot, and never turns wrong until the laptop becomes "cold" again (resume from a suspend after a long pause, or new cold boot). Is it the same for you ?


          As far as I understood , manufacturors can adjust some parameters of this APU (TDP and mayby others)...


          Can the issue we are facing  with this Carrizo APU come from  a mismatch between this configuration, and the amdgpu driver ?


          EDIT ( Dec 14th 2017)  I fixed this issue by downloading, compiling and installiing the latest 4.15-rc3 kernel.


          Thanks to amdgpu dc team !