Created attachment 118636 [details] dmesg My system is unable to boot with an ASUS Radeon R7 370 STRIX Gaming with 2GB (STRIX-R7370-DC20C-2GD5-GAMING) unless I put radeon.dpm=0 (or nomodeset) to the boot parameter. Also any change to the power profile results in an immediate lock up with blank screen or, sometimes, black and white vertical stripes. Tested with Linux 4.1 and 4.2. I my issue is related with #91294. The Commit https://github.com/torvalds/linux/commit/e78654799135a788a941bacad3452fbd7083e518 fixes the Issue if a simular Line is added "{ PCI_VENDOR_ID_ATI, 0x6811, 0x1043, 0x2015, 0, 120000 },".
Created attachment 118637 [details] lspci -vnn
Already added in: commit 2b02ec79004388a8c65e227bc289ed891b5ac8c6 Author: Alex Deucher <alexander.deucher@amd.com> Date: Fri Oct 2 16:12:07 2015 -0400 drm/radeon: add quirk for ASUS R7 370 Bug: https://bugs.freedesktop.org/show_bug.cgi?id=92260 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c index e9115d3..e72bf46 100644 --- a/drivers/gpu/drm/radeon/si_dpm.c +++ b/drivers/gpu/drm/radeon/si_dpm.c @@ -2928,6 +2928,7 @@ static struct si_dpm_quirk si_dpm_quirk_list[] = { { PCI_VENDOR_ID_ATI, 0x6811, 0x174b, 0xe271, 0, 120000 }, { PCI_VENDOR_ID_ATI, 0x6810, 0x174b, 0xe271, 85000, 90000 }, { PCI_VENDOR_ID_ATI, 0x6811, 0x1762, 0x2015, 0, 120000 }, + { PCI_VENDOR_ID_ATI, 0x6811, 0x1043, 0x2015, 0, 120000 }, { 0, 0, 0, 0 }, };
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