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Ubuntu 14.04.3 LTS, AMD A10-7870K: `clinfo` throws `Segmentation fault (core dumped)` after second attempt.
root@eva:~# dpkg -i fglrx-core_15.201-0ubuntu1_amd64_UB_14.01.deb
Selecting previously unselected package fglrx-core.
(Reading database ... 87607 files and directories currently installed.)
Preparing to unpack fglrx-core_15.201-0ubuntu1_amd64_UB_14.01.deb ...
Unpacking fglrx-core (2:15.201-0ubuntu1) ...
Setting up fglrx-core (2:15.201-0ubuntu1) ...
update-alternatives: using /usr/lib/fglrx-core/ld.so.conf to provide /etc/ld.so.conf.d/x86_64-linux-gnu_GFXCORE.conf (x86_64-linux-gnu_gfxcore_conf) in auto mode
Loading new fglrx-core-15.201 DKMS files...
First Installation: checking all kernels...
Building only for 3.19.0-25-generic
Building for architecture x86_64
Building initial module for 3.19.0-25-generic
Done.

fglrx:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/3.19.0-25-generic/updates/dkms/

depmod..........

DKMS: install completed.
update-initramfs: deferring update (trigger activated)
Processing triggers for initramfs-tools (0.103ubuntu4.2) ...
update-initramfs: Generating /boot/initrd.img-3.19.0-25-generic
Processing triggers for libc-bin (2.19-0ubuntu6.6) ...
root@eva:~# reboot
Welcome to Ubuntu 14.04.3 LTS (GNU/Linux 3.19.0-25-generic x86_64)

 * Documentation:  https://help.ubuntu.com/

  System information as of Mon Nov 16 09:23:04 UTC 2015

  System load:  0.71               Processes:           147
  Usage of /:   2.2% of 285.22GB   Users logged in:     0
  Memory usage: 2%                 IP address for eth0: 192.168.0.200
  Swap usage:   0%

  Graph this data and manage this system at:
    https://landscape.canonical.com/

Last login: Mon Nov 16 09:16:22 2015 from 192.168.0.100
eva@eva:~$ clinfo
Number of platforms:				 1
  Platform Profile:				 FULL_PROFILE
  Platform Version:				 OpenCL 2.0 AMD-APP (1800.11)
  Platform Name:				 AMD Accelerated Parallel Processing
  Platform Vendor:				 Advanced Micro Devices, Inc.
  Platform Extensions:				 cl_khr_icd cl_amd_event_callback cl_amd_offline_devices


  Platform Name:				 AMD Accelerated Parallel Processing
Number of devices:				 2
  Device Type:					 CL_DEVICE_TYPE_GPU
  Vendor ID:					 1002h
  Board name:
  Device Topology:				 PCI[ B#0, D#1, F#0 ]
  Max compute units:				 8
  Max work items dimensions:			 3
    Max work items[0]:				 256
    Max work items[1]:				 256
    Max work items[2]:				 256
  Max work group size:				 256
  Preferred vector width char:			 4
  Preferred vector width short:			 2
  Preferred vector width int:			 1
  Preferred vector width long:			 1
  Preferred vector width float:			 1
  Preferred vector width double:		 1
  Native vector width char:			 4
  Native vector width short:			 2
  Native vector width int:			 1
  Native vector width long:			 1
  Native vector width float:			 1
  Native vector width double:			 1
  Max clock frequency:				 866Mhz
  Address bits:					 64
  Max memory allocation:			 195821568
  Image support:				 Yes
  Max number of images read arguments:		 128
  Max number of images write arguments:		 64
  Max image 2D width:				 16384
  Max image 2D height:				 16384
  Max image 3D width:				 2048
  Max image 3D height:				 2048
  Max image 3D depth:				 2048
  Max samplers within kernel:			 16
  Max size of kernel argument:			 1024
  Alignment (bits) of base address:		 2048
  Minimum alignment (bytes) for any datatype:	 128
  Single precision floating point capability
    Denorms:					 No
    Quiet NaNs:					 Yes
    Round to nearest even:			 Yes
    Round to zero:				 Yes
    Round to +ve and infinity:			 Yes
    IEEE754-2008 fused multiply-add:		 Yes
  Cache type:					 Read/Write
  Cache line size:				 64
  Cache size:					 16384
  Global memory size:				 783286272
  Constant buffer size:				 65536
  Max number of constant args:			 8
  Local memory type:				 Scratchpad
  Local memory size:				 32768
  Max pipe arguments:				 16
  Max pipe active reservations:			 16
  Max pipe packet size:				 195821568
  Max global variable size:			 176239360
  Max global variable preferred total size:	 783286272
  Max read/write image args:			 64
  Max on device events:				 1024
  Queue on device max size:			 524288
  Max on device queues:				 1
  Queue on device preferred size:		 262144
  SVM capabilities:
    Coarse grain buffer:			 Yes
    Fine grain buffer:				 Yes
    Fine grain system:				 No
    Atomics:					 No
  Preferred platform atomic alignment:		 0
  Preferred global atomic alignment:		 0
  Preferred local atomic alignment:		 0
  Kernel Preferred work group size multiple:	 64
  Error correction support:			 0
  Unified memory for Host and Device:		 1
  Profiling timer resolution:			 1
  Device endianess:				 Little
  Available:					 Yes
  Compiler available:				 Yes
  Execution capabilities:
    Execute OpenCL kernels:			 Yes
    Execute native function:			 No
  Queue on Host properties:
    Out-of-Order:				 No
    Profiling :					 Yes
  Queue on Device properties:
    Out-of-Order:				 Yes
    Profiling :					 Yes
  Platform ID:					 0x7f7a8f84c430
  Name:						 Spectre
  Vendor:					 Advanced Micro Devices, Inc.
  Device OpenCL C version:			 OpenCL C 2.0
  Driver version:				 1800.11 (VM)
  Profile:					 FULL_PROFILE
  Version:					 OpenCL 2.0 AMD-APP (1800.11)
  Extensions:					 cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_khr_gl_depth_images cl_ext_atomic_counters_32 cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_image2d_from_buffer cl_khr_spir cl_khr_subgroups cl_khr_gl_event cl_khr_depth_images


  Device Type:					 CL_DEVICE_TYPE_CPU
  Vendor ID:					 1002h
  Board name:
  Max compute units:				 4
  Max work items dimensions:			 3
    Max work items[0]:				 1024
    Max work items[1]:				 1024
    Max work items[2]:				 1024
  Max work group size:				 1024
  Preferred vector width char:			 16
  Preferred vector width short:			 8
  Preferred vector width int:			 4
  Preferred vector width long:			 2
  Preferred vector width float:			 8
  Preferred vector width double:		 4
  Native vector width char:			 16
  Native vector width short:			 8
  Native vector width int:			 4
  Native vector width long:			 2
  Native vector width float:			 8
  Native vector width double:			 4
  Max clock frequency:				 1700Mhz
  Address bits:					 64
  Max memory allocation:			 2147483648
  Image support:				 Yes
  Max number of images read arguments:		 128
  Max number of images write arguments:		 64
  Max image 2D width:				 8192
  Max image 2D height:				 8192
  Max image 3D width:				 2048
  Max image 3D height:				 2048
  Max image 3D depth:				 2048
  Max samplers within kernel:			 16
  Max size of kernel argument:			 4096
  Alignment (bits) of base address:		 1024
  Minimum alignment (bytes) for any datatype:	 128
  Single precision floating point capability
    Denorms:					 Yes
    Quiet NaNs:					 Yes
    Round to nearest even:			 Yes
    Round to zero:				 Yes
    Round to +ve and infinity:			 Yes
    IEEE754-2008 fused multiply-add:		 Yes
  Cache type:					 Read/Write
  Cache line size:				 64
  Cache size:					 16384
  Global memory size:				 3486367744
  Constant buffer size:				 65536
  Max number of constant args:			 8
  Local memory type:				 Global
  Local memory size:				 32768
  Max pipe arguments:				 16
  Max pipe active reservations:			 16
  Max pipe packet size:				 2147483648
  Max global variable size:			 1879048192
  Max global variable preferred total size:	 1879048192
  Max read/write image args:			 64
  Max on device events:				 0
  Queue on device max size:			 0
  Max on device queues:				 0
  Queue on device preferred size:		 0
  SVM capabilities:
    Coarse grain buffer:			 No
    Fine grain buffer:				 No
    Fine grain system:				 No
    Atomics:					 No
  Preferred platform atomic alignment:		 0
  Preferred global atomic alignment:		 0
  Preferred local atomic alignment:		 0
  Kernel Preferred work group size multiple:	 1
  Error correction support:			 0
  Unified memory for Host and Device:		 1
  Profiling timer resolution:			 1
  Device endianess:				 Little
  Available:					 Yes
  Compiler available:				 Yes
  Execution capabilities:
    Execute OpenCL kernels:			 Yes
    Execute native function:			 Yes
  Queue on Host properties:
    Out-of-Order:				 No
    Profiling :					 Yes
  Queue on Device properties:
    Out-of-Order:				 No
    Profiling :					 No
  Platform ID:					 0x7f7a8f84c430
  Name:						 AMD A10-7870K Radeon R7, 12 Compute Cores 4C+8G
  Vendor:					 AuthenticAMD
  Device OpenCL C version:			 OpenCL C 1.2
  Driver version:				 1800.11 (sse2,avx,fma4)
  Profile:					 FULL_PROFILE
  Version:					 OpenCL 1.2 AMD-APP (1800.11)
  Extensions:					 cl_khr_fp64 cl_amd_fp64 cl_khr_global_int32_base_atomics cl_khr_global_int32_extended_atomics cl_khr_local_int32_base_atomics cl_khr_local_int32_extended_atomics cl_khr_int64_base_atomics cl_khr_int64_extended_atomics cl_khr_3d_image_writes cl_khr_byte_addressable_store cl_khr_gl_sharing cl_ext_device_fission cl_amd_device_attribute_query cl_amd_vec3 cl_amd_printf cl_amd_media_ops cl_amd_media_ops2 cl_amd_popcnt cl_khr_spir cl_khr_gl_event


eva@eva:~$ clinfo
Segmentation fault (core dumped)
eva@eva:~$ which clinfo
/usr/bin/clinfo
eva@eva:~$ file /usr/bin/clinfo
/usr/bin/clinfo: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, stripped
eva@eva:~$ ldd /usr/bin/clinfo
	linux-vdso.so.1 =>  (0x00007ffc5eb8a000)
	librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f8d1be68000)
	libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f8d1bb60000)
	libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f8d1b958000)
	libOpenCL.so.1 => /usr/lib/libOpenCL.so.1 (0x00007f8d1b750000)
	libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f8d1b538000)
	libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f8d1b318000)
	libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f8d1af50000)
	/lib64/ld-linux-x86-64.so.2 (0x00007f8d1c070000)
eva@eva:~$ sudo dmesg | grep fglrx
[   12.203149] fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel.
[   12.225391] <6>[fglrx] Maximum main memory to use for locked dma buffers: 3173 MBytes.
[   12.225444] <6>[fglrx]   vendor: 1002 device: 130f revision: d4 count: 1
[   12.225899] <6>[fglrx] ioport: bar 4, base 0xf000, size: 0x100
[   12.226452] <6>[fglrx] Kernel PAT support is enabled
[   12.226473] <6>[fglrx] module loaded - fglrx 15.20.3 [Sep  8 2015] with 1 minors
[  498.916479] <6>[fglrx] Firegl kernel thread PID: 1394
[  498.916642] <6>[fglrx] Firegl kernel thread PID: 1395
[  498.916722] <6>[fglrx] Firegl kernel thread PID: 1396
[  498.916836] <6>[fglrx] IRQ 44 Enabled
[  498.921742] <6>[fglrx] Reserved FB block: Shared offset:0, size:1000000
[  498.921744] <6>[fglrx] Reserved FB block: Unshared offset:faa4000, size:4000
[  498.921745] <6>[fglrx] Reserved FB block: Unshared offset:faa8000, size:458000
[  498.921747] <6>[fglrx] Reserved FB block: Unshared offset:ff00000, size:100000
[  498.921748] <6>[fglrx] Reserved FB block: Unshared offset:1ffd7000, size:29000
[  499.616434] <6>[fglrx] No ADL handler for Escape code 0x00110020
@Zatvobor

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@Zatvobor Zatvobor commented Nov 16, 2015

Moreover, I see the same behavior either a discrete PCI AMD R7 260X card is plugged and powered or the discrete card is removed from the PCI slot at all.

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