Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-21 Thread Felix Miata
Alexandre Rossi composed on 2017-12-21 23:01 (UTC+0100): >> How long is the cable? Do you have access to another to try? ~20% of the HDMI >> cables I have are either useless or flaky with at least one device. > Same symptoms with another cable. >> Does the TV label any of its HDMI ports

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-21 Thread Alexandre Rossi
>> Two other PCs (Linux and Windows) going through the same HDMI cable to >> the same TV and same TV port using the same 1920x1080 resolution work >> perfectly. > > How long is the cable? Do you have access to another to try? ~20% of the HDMI > cables I have are either useless or flaky with at

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-18 Thread Alexandre Rossi
>> I'm experiencing red blinking pixels in dark areas in the displayed >> Xorg picture on my TV connected using a HDMI cable. > > can you test with another HDMI cable? Just because the HDMI cable works > under Windows or Linux with a different GPU does not mean it will work under > Linux with your

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-14 Thread Felix Miata
Alexandre Rossi composed on 2017-12-14 22:56 (UTC+0100): > Two other PCs (Linux and Windows) going through the same HDMI cable to > the same TV and same TV port using the same 1920x1080 resolution work > perfectly. How long is the cable? Do you have access to another to

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-14 Thread Ben Caradoc-Davies
On 15/12/17 10:56, Alexandre Rossi wrote: I'm experiencing red blinking pixels in dark areas in the displayed Xorg picture on my TV connected using a HDMI cable. Alexandre, can you test with another HDMI cable? Just because the HDMI cable works under Windows or Linux with a different GPU does

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-14 Thread Alexandre Rossi
Hi, I finally got some time to investigate further. Setup I'm running Debian Stretch with a backported 4.13 Linux kernel on an Intel Kaby Lake (chipset H110 and HD graphics 630) machine. I've installed firmware-misc-nonfree and updated my BIOS to fix the Kavy Lake HT bug. Problem I'm

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-11 Thread Jörg-Volker Peetz
Alexandre Rossi wrote on 12/11/17 10:05: >> could you show your Xorg.0.log files? > > Here it is attached. > >> The Kaby Lake GPU needs some firmware. Therefore, what is the print out of >> grep firmware /var/log/dmesg > > $ sudo dmesg | grep firmware > [9.165601] i915 :00:02.0:

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-11 Thread Alexandre Rossi
> could you show your Xorg.0.log files? Here it is attached. > The Kaby Lake GPU needs some firmware. Therefore, what is the print out of > grep firmware /var/log/dmesg $ sudo dmesg | grep firmware [9.165601] i915 :00:02.0: firmware: direct-loading firmware i915/kbl_dmc_ver1_01.bin [

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-10 Thread Jörg-Volker Peetz
Hi, could you show your Xorg.0.log files? The Kaby Lake GPU needs some firmware. Therefore, what is the print out of grep firmware /var/log/dmesg ? Regards, jvp.

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-10 Thread Alexandre Rossi
> The image with errors looks as it was manipulated in a photoeditor, eg. > Gamma/levels curves ... Does the driver have some image adjustment enabled? I use defaults everywhere, and the behavior is the same with a ubuntu live image. $ xgamma -> Red 1.000, Green 1.000, Blue 1.000

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-09 Thread Benny Simonsen
The image with errors looks as it was manipulated in a photoeditor, eg. Gamma/levels curves ... Does the driver have some image adjustment enabled?

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-09 Thread David Wright
On Sat 09 Dec 2017 at 15:35:18 (+0100), Alexandre Rossi wrote: > > Screenshot [1] looks normal to me, but on screenphoto [2] I clearly see > > red-ish stripes and pink spots in the middle. > > > > Now it looks like your LCD could be faulty not PC hardware\software. Can you > > test it with another

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-09 Thread Alexandre Rossi
> Screenshot [1] looks normal to me, but on screenphoto [2] I clearly see > red-ish stripes and pink spots in the middle. > > Now it looks like your LCD could be faulty not PC hardware\software. Can you > test it with another LCD monitor, or connect it to TV via HDMI cable if it's > possible? The

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-08 Thread Alexander V. Makartsev
On 08.12.2017 17:35, Alexandre Rossi wrote: > (please CC me as I am not subscribed to the list) > >> A screenshot would be helpful. Does these artifacts appear every single time >> or sporadically? > The artifact appear at the same place every single time and seem to > follow (in videos) a single

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-08 Thread Alexandre Rossi
(please CC me as I am not subscribed to the list) > A screenshot would be helpful. Does these artifacts appear every single time > or sporadically? The artifact appear at the same place every single time and seem to follow (in videos) a single set of colors (dark brownish areas). You can look at

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-07 Thread Shin Ice
On Thu, Dec 07, 2017 at 05:20:41PM +0500, Alexander V. Makartsev wrote: > > There was a microcode bug discovered recently in Kabylake-Skylake CPUs. > It causes memory corruption if I remember it correctly. It could be > fixed for certain CPUs by updating firmware for your motherboard or >

Re: on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-07 Thread Alexander V. Makartsev
On 07.12.2017 16:33, Alexandre Rossi wrote: > (please CC me as I am not subscribed to the list) > > Hi, > > I am experiencing on-screen artifacts (red dots) when running at > 1920x1080 on HDMI out. I've ruled out a hardware (cable, TV or GPU) > issue by installing win10 which does not show those

on-screen artifacts (red pixels) at high resolution with Intel HD 630 (Kaby Lake)

2017-12-07 Thread Alexandre Rossi
(please CC me as I am not subscribed to the list) Hi, I am experiencing on-screen artifacts (red dots) when running at 1920x1080 on HDMI out. I've ruled out a hardware (cable, TV or GPU) issue by installing win10 which does not show those problems. This is by using stretch, issue occurs with