This is a note to let you know that I've just added the patch titled drm/ast: change resolution may cause screen blurred to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: drm-ast-change-resolution-may-cause-screen-blurred.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 1a37bd823891568f8721989aed0615835632d81a Mon Sep 17 00:00:00 2001 From: "Y.C. Chen" <yc_chen@xxxxxxxxxxxxxx> Date: Wed, 3 Oct 2018 14:57:47 +0800 Subject: drm/ast: change resolution may cause screen blurred From: Y.C. Chen <yc_chen@xxxxxxxxxxxxxx> commit 1a37bd823891568f8721989aed0615835632d81a upstream. The value of pitches is not correct while calling mode_set. The issue we found so far on following system: - Debian8 with XFCE Desktop - Ubuntu with KDE Desktop - SUSE15 with KDE Desktop Signed-off-by: Y.C. Chen <yc_chen@xxxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Tested-by: Jean Delvare <jdelvare@xxxxxxx> Reviewed-by: Jean Delvare <jdelvare@xxxxxxx> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/ast/ast_mode.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/gpu/drm/ast/ast_mode.c +++ b/drivers/gpu/drm/ast/ast_mode.c @@ -545,6 +545,7 @@ static int ast_crtc_do_set_base(struct d } ast_bo_unreserve(bo); + ast_set_offset_reg(crtc); ast_set_start_address_crt1(crtc, (u32)gpu_addr); return 0; Patches currently in stable-queue which might be from yc_chen@xxxxxxxxxxxxxx are queue-4.9/drm-ast-change-resolution-may-cause-screen-blurred.patch queue-4.9/drm-ast-fixed-cursor-may-disappear-sometimes.patch queue-4.9/drm-ast-remove-existing-framebuffers-before-loading-driver.patch