lsmod |grep radeon
radeon 823799 2
i2c_algo_bit 13066 1 radeon
drm_kms_helper 43551 1 radeon
ttm 62706 1 radeon
drm 216715 4 ttm,drm_kms_helper,radeon
i2c_core 28450 6 drm,i2c_i801,drm_kms_helper,i2c_algo_bit,radeon,videodev
lspci | grep AMD
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI RV630 [Mobility Radeon HD 2600 XT]