[Bug 1729377] [NEW] AMD r7 250 wrong detection

[brad]

Public bug reported:

My AMD R7 250 GPU is being wrongly detected in Ubuntu as a Radeon HD
8830M. This results in the wrong detection of drivers. The result is a
wrongly installed driver and very poor performance. This bug has been
affecting me since Ubuntu 16.10, and still affects me in Ubuntu 17.10.

brad at brad-ubuntu:~$ lspci | grep 'VGA compatible controller'
02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus LE [Radeon HD 8830M] (rev 87)
brad at brad-ubuntu:~$ lsmod | grep -i 'radeon'
radeon               1470464  9
i2c_algo_bit           16384  2 amdgpu,radeon
ttm                    94208  2 amdgpu,radeon
drm_kms_helper        167936  2 amdgpu,radeon
drm                   356352  9 amdgpu,radeon,ttm,drm_kms_helper
brad at brad-ubuntu:~$ lsmod | grep -i 'amdgpu'
amdgpu               2007040  0
i2c_algo_bit           16384  2 amdgpu,radeon
ttm                    94208  2 amdgpu,radeon
drm_kms_helper        167936  2 amdgpu,radeon
drm                   356352  9 amdgpu,radeon,ttm,drm_kms_helper

Ubuntu installs by autodetection: xserver-xorg-video-ati. The proper
driver is, xserver-xorg-video-radeon.

However even after proper installation of the new driver. Ubuntu still
reports that I am using a mobile graphics card, instead of a desktop
graphics card.

Ubuntu reports: llvmpipe (LLVM 5.0, 128 bits) with the radeon driver.
And CAPE VERDE with the ati driver. Its a "OLAND" or "southern island"
card.

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: xorg (Ubuntu)
   Importance: Undecided
       Status: New

** No longer affects: update-manager (Ubuntu)

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https://bugs.launchpad.net/bugs/1729377

Title:
  AMD r7 250 wrong detection

Status in xorg package in Ubuntu:
  New

Bug description:
  My AMD R7 250 GPU is being wrongly detected in Ubuntu as a Radeon HD
  8830M. This results in the wrong detection of drivers. The result is a
  wrongly installed driver and very poor performance. This bug has been
  affecting me since Ubuntu 16.10, and still affects me in Ubuntu 17.10.

  brad at brad-ubuntu:~$ lspci | grep 'VGA compatible controller'
  02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Venus LE [Radeon HD 8830M] (rev 87)
  brad at brad-ubuntu:~$ lsmod | grep -i 'radeon'
  radeon               1470464  9
  i2c_algo_bit           16384  2 amdgpu,radeon
  ttm                    94208  2 amdgpu,radeon
  drm_kms_helper        167936  2 amdgpu,radeon
  drm                   356352  9 amdgpu,radeon,ttm,drm_kms_helper
  brad at brad-ubuntu:~$ lsmod | grep -i 'amdgpu'
  amdgpu               2007040  0
  i2c_algo_bit           16384  2 amdgpu,radeon
  ttm                    94208  2 amdgpu,radeon
  drm_kms_helper        167936  2 amdgpu,radeon
  drm                   356352  9 amdgpu,radeon,ttm,drm_kms_helper

  Ubuntu installs by autodetection: xserver-xorg-video-ati. The proper
  driver is, xserver-xorg-video-radeon.

  However even after proper installation of the new driver. Ubuntu still
  reports that I am using a mobile graphics card, instead of a desktop
  graphics card.

  Ubuntu reports: llvmpipe (LLVM 5.0, 128 bits) with the radeon driver.
  And CAPE VERDE with the ati driver. Its a "OLAND" or "southern island"
  card.

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