On Thu, Sep 23, 2021 at 2:15 PM Francesco Paolo Lovergine frankie@debian.org wrote:
Hi,
The patch title is a little long. How about something like:
drm: fix colour banding on Lenovo Thinkpad L540 panel
there is an issue with Lenovo Thinkpad L540 very similar to those described here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420 or here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308 that is a bad looking color banding with dark colors mainly. It happens with any kernel starting from 4.8 up to the current.
Bugs should be referenced like: Bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1749420 Bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1788308
Otherwise looks good to me.
Alex
Signed-off-by: Francesco Paolo Lovergine frankie@debian.org
drivers/gpu/drm/drm_edid.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 6325877c5fd6..48e06cc33e4d 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -141,6 +141,9 @@ static const struct edid_quirk { /* LGD panel of HP zBook 17 G2, eDP 10 bpc, but reports unknown bpc */ { "LGD", 764, EDID_QUIRK_FORCE_10BPC },
/* LGD panel of Lenovo L540 reports 8 bpc, but is a 6 bpc panel */{ "LGD", 0x038e, EDID_QUIRK_FORCE_6BPC },/* LG Philips LCD LP154W01-A5 */ { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE },-- 2.30.2
-- Francesco P. Lovergine