[Bug 53544] New: Incorrect modeline due to incorrect EDID block for LG SL80 TV

[Bug 53544] New: Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

             Bug #: 53544
           Summary: Incorrect modeline due to incorrect EDID block for LG
                    SL80 TV
    Classification: Unclassified
           Product: DRI
           Version: DRI CVS
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: General
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: paulepanter@users.sourceforge.net


The LG SL80 TV exhibits the same garbled screen as reported in #26294 [1] when
connecting an ASUS Eee PC 701 4G over VGA.

This is just a separate report for this particular TV and a patch is going to
be send to the list. Log files are included in comment 26294#c20 and comment
26294#c21 of the referenced report.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=26294

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

Paul Menzel <paulepanter@users.sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |paulepanter@users.sourcefor
                   |                            |ge.net

--- Comment #1 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-08-15 14:59:03 UTC ---
(In reply to comment #0)
> The LG SL80 TV exhibits the same garbled screen as reported in #26294 [1] when
> connecting an ASUS Eee PC 701 4G over VGA.
> 
> This is just a separate report for this particular TV and a patch is going to
> be send to the list. Log files are included in comment 26294#c20 and comment
> 26294#c21 of the referenced report.
> 
> [1] https://bugs.freedesktop.org/show_bug.cgi?id=26294

It looks like I messed up the mark up [2][3].

[2] https://bugs.freedesktop.org/show_bug.cgi?id=26294#c20
[3] https://bugs.freedesktop.org/show_bug.cgi?id=26294#c21

Just a test:

bug 26294
ticket 26294
report 26294
comment #26294#c20
report 26294#c20

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #2 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-08-15 15:01:55 UTC ---
(In reply to comment #1)

[…]

> Just a test:
> 
> bug 26294
> ticket 26294
> report 26294
> comment #26294#c20
> report 26294#c20

bug 26294 comment 20 should work [1].

[1] http://www.mail-archive.com/tools-discuss@opensolaris.org/msg04107.html

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #3 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-08-15 15:03:41 UTC ---
Here is the (decoded) EDID.

$ ./edid-decode lg.edid 
Extracted contents:
header:          00 ff ff ff ff ff ff 00
serial number:   1e 6d 01 00 01 01 01 01 02 13
version:         01 03
basic params:    68 73 41 78 0a
chroma info:     cf 74 a3 57 4c b0 23 09 48 4c
established:     a1 08 00
standard:        81 80 61 40 45 40 31 40 01 01 01 01 01 01 01 01
descriptor 1:    02 3a 80 18 71 38 2d 40 58 2c 45 00 7e 8a 42 00 00 1e
descriptor 2:    01 1d 00 72 51 d0 1e 20 6e 28 55 00 7e 8a 42 00 00 1e
descriptor 3:    00 00 00 fd 00 3a 3e 1e 53 10 00 0a 20 20 20 20 20 20
descriptor 4:    00 00 00 fc 00 4c 47 20 54 56 0a 20 20 20 20 20 20 20
extensions:      00
checksum:        1d

Manufacturer: GSM Model 1 Serial Number 16843009
Made week 2 of 2009
EDID version: 1.3
Analog display, Input voltage level: 0.7/0.7 V
Sync: Separate 
Maximum image size: 115 cm x 65 cm
Gamma: 2.20
RGB color display
First detailed timing is preferred timing
Established timings supported:
  720x400@70Hz
  640x480@60Hz
  800x600@60Hz
  1024x768@60Hz
Standard timings supported:
  1280x1024@60Hz
  1024x768@60Hz
  800x600@60Hz
  640x480@60Hz
Detailed mode: Clock 148.500 MHz, 1150 mm x 650 mm
               1920 2008 2052 2200 hborder 0
               1080 1084 1089 1125 vborder 0
               +hsync +vsync
Detailed mode: Clock 74.250 MHz, 1150 mm x 650 mm
               1280 1390 1430 1650 hborder 0
                720  725  730  750 vborder 0
               +hsync +vsync
Monitor ranges: 58-62Hz vertical, 30-83kHz horizontal, max dotclock 160MHz
Monitor name: LG TV
        Checksum: 0x1d (valid)

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #4 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-08-15 15:31:41 UTC ---
Patch sent to the dri-devel list [1].

[1] http://lists.freedesktop.org/archives/dri-devel/2012-August/026476.html

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #5 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-09-22 09:36:42 UTC ---
(In reply to comment #4)
> Patch sent to the dri-devel list [1].
> 
> [1] http://lists.freedesktop.org/archives/dri-devel/2012-August/026476.html

TLDR: A T60 with a 945GM/GMS(?) controller works without that patch with Linux
3.2.x.

I am petrified. Testing this TV with a T60 and a different VGA cable (all pins
populated, instead of Pin 9 missing) everything works fine (besides a little
vertical shift to the right). :/

        $ lspci
        00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML
and 945GT Express Memory Controller Hub (rev 03)
        00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS,
943/940GML Express Integrated Graphics Controller (rev 03)
        00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME,
943/940GML Express Integrated Graphics Controller (rev 03)
        00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High
Definition Audio Controller (rev 02)
        00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port
1 (rev 02)
        00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port
2 (rev 02)
        00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port
3 (rev 02)
        00:1c.3 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port
4 (rev 02)
        00:1d.0 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI
Controller #1 (rev 02)
        00:1d.1 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI
Controller #2 (rev 02)
        00:1d.2 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI
Controller #3 (rev 02)
        00:1d.3 USB controller: Intel Corporation N10/ICH 7 Family USB UHCI
Controller #4 (rev 02)
        00:1d.7 USB controller: Intel Corporation N10/ICH 7 Family USB2 EHCI
Controller (rev 02)
        00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
        00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface
Bridge (rev 02)
        00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE
Controller (rev 02)
        00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7-M Family)
SATA Controller [AHCI mode] (rev 02)
        00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev
02)
        02:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet
Controller
        03:00.0 Ethernet controller: Atheros Communications Inc. AR5212
802.11abg NIC (rev 01)
        15:00.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus
Controller

The read EDID is the same.

        $ xrandr -q --verbose
        […]
        VGA1 connected 1920x1080+0+0 (0xb9) normal (normal left inverted right
x axis y axis) 1150mm x 650mm
            Identifier: 0x42
            Timestamp:  222127
            Subpixel:   unknown
            Gamma:      1.0:1.0:1.0
            Brightness: 1.0
            Clones:     DVI1
            CRTC:       0
            CRTCs:      0 1
            Transform:  1.000000 0.000000 0.000000
                        0.000000 1.000000 0.000000
                        0.000000 0.000000 1.000000
                       filter: 
            EDID:
                00ffffffffffff001e6d010001010101
                02130103687341780acf74a3574cb023
                09484ca1080081806140454031400101
                010101010101023a801871382d40582c
                45007e8a4200001e011d007251d01e20
                6e2855007e8a4200001e000000fd003a
                3e1e5310000a202020202020000000fc
                004c472054560a20202020202020001d
          1920x1080 (0xb9)  148.5MHz +HSync +VSync *current +preferred
                h: width  1920 start 2008 end 2052 total 2200 skew    0 clock  
67.5KHz
                v: height 1080 start 1084 end 1089 total 1125           clock  
60.0Hz
          1280x1024 (0x47)  108.0MHz +HSync +VSync
                h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  
64.0KHz
                v: height 1024 start 1025 end 1028 total 1066           clock  
60.0Hz
          1280x720 (0xba)   74.2MHz +HSync +VSync
                h: width  1280 start 1390 end 1430 total 1650 skew    0 clock  
45.0KHz
                v: height  720 start  725 end  730 total  750           clock  
60.0Hz
          1024x768 (0x4c)   65.0MHz -HSync -VSync
                h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  
48.4KHz
                v: height  768 start  771 end  777 total  806           clock  
60.0Hz
          800x600 (0x4d)   40.0MHz +HSync +VSync
                h: width   800 start  840 end  968 total 1056 skew    0 clock  
37.9KHz
                v: height  600 start  601 end  605 total  628           clock  
60.3Hz
          640x480 (0x4f)   25.2MHz -HSync -VSync
                h: width   640 start  656 end  752 total  800 skew    0 clock  
31.5KHz
                v: height  480 start  490 end  492 total  525           clock  
60.0Hz
          640x480 (0xbb)   25.2MHz -HSync -VSync
                h: width   640 start  656 end  752 total  800 skew    0 clock  
31.5KHz
                v: height  480 start  489 end  492 total  525           clock  
59.9Hz
          720x400 (0xbc)   28.3MHz -HSync +VSync
                h: width   720 start  738 end  846 total  900 skew    0 clock  
31.5KHz
                v: height  400 start  412 end  414 total  449           clock  
70.1Hz
        DVI1 disconnected (normal left inverted right x axis y axis)
            Identifier: 0x43
            Timestamp:  222127
            Subpixel:   horizontal rgb
            Clones:     VGA1
            CRTCs:      0 1
            Transform:  1.000000 0.000000 0.000000
                        0.000000 1.000000 0.000000
                        0.000000 0.000000 1.000000
                       filter:

Here is the excerpt from `/var/log/Xorg.0.log`.

        [   282.004] (II) intel(0): EDID vendor "GSM", prod id 1
        [   282.004] (II) intel(0): Using hsync ranges from config file
        [   282.004] (II) intel(0): Using vrefresh ranges from config file
        [   282.004] (II) intel(0): Printing DDC gathered Modelines:
        [   282.004] (II) intel(0): Modeline "1920x1080"x0.0  148.50  1920 2008
2052 2200  1080 1084 1089 1125 +hsync +vsync (67.5 kHz eP)
        [   282.004] (II) intel(0): Modeline "1280x720"x0.0   74.25  1280 1390
1430 1650  720 725 730 750 +hsync +vsync (45.0 kHz e)
        [   282.004] (II) intel(0): Modeline "800x600"x0.0   40.00  800 840 968
1056  600 601 605 628 +hsync +vsync (37.9 kHz e)
        [   282.005] (II) intel(0): Modeline "640x480"x0.0   25.18  640 656 752
800  480 490 492 525 -hsync -vsync (31.5 kHz e)
        [   282.005] (II) intel(0): Modeline "720x400"x0.0   28.32  720 738 846
900  400 412 414 449 -hsync +vsync (31.5 kHz e)
        [   282.005] (II) intel(0): Modeline "1024x768"x0.0   65.00  1024 1048
1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz e)
        [   282.005] (II) intel(0): Modeline "1280x1024"x0.0  108.00  1280 1328
1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz e)

So I am puzzled. Could it be a specific problem to the chipset 915GM?

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #6 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-09-22 09:38:16 UTC ---
Created attachment 67539
  --> https://bugs.freedesktop.org/attachment.cgi?id=67539
`/var/log/Xorg.0.log` from T60

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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--- Comment #7 from Paul Menzel <paulepanter@users.sourceforge.net> 2012-09-22 09:39:18 UTC ---
Created attachment 67540
  --> https://bugs.freedesktop.org/attachment.cgi?id=67540
`xrandr -q --verbose` from T60

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #8 from Paul Menzel <paulepanter@users.sourceforge.net> ---
Comparing the modelines from the `xrandr -q --verbose` output they are the
same, which is even more confusing.

>From Lenovo T60.

  1920x1080 (0xb9)  148.5MHz +HSync +VSync *current +preferred
        h: width  1920 start 2008 end 2052 total 2200 skew    0 clock   67.5KHz
        v: height 1080 start 1084 end 1089 total 1125           clock   60.0Hz

>From ASUS EeePC 701 4G. The `*current` is missing, because when capturing it, I
had to go back to LVDS, since it did not work by default.

  1920x1080 (0xbd)  148.5MHz +HSync +VSync +preferred
        h: width  1920 start 2008 end 2052 total 2200 skew    0 clock   67.5KHz
        v: height 1080 start 1084 end 1089 total 1125           clock   60.0Hz

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[Bug 53544] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #9 from Paul Menzel <paulepanter@users.sourceforge.net> ---
To be clear, both systems use the same Linux kernel and userspace (Debian
Sid/unstable).

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[Bug 53544] [915GM] Incorrect modeline due to incorrect EDID block for LG SL80 TV

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 1186 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=53544

Paul Menzel <paulepanter@users.sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Incorrect modeline due to   |[915GM] Incorrect modeline
                   |incorrect EDID block for LG |due to incorrect EDID block
                   |SL80 TV                     |for LG SL80 TV

--- Comment #10 from Paul Menzel <paulepanter@users.sourceforge.net> ---
(In reply to comment #5)
> (In reply to comment #4)
> > Patch sent to the dri-devel list [1].
> > 
> > [1] http://lists.freedesktop.org/archives/dri-devel/2012-August/026476.html
> 
> TLDR: A T60 with a 945GM/GMS(?) controller works without that patch with
> Linux 3.2.x.
> 
> I am petrified. Testing this TV with a T60 and a different VGA cable (all
> pins populated, instead of Pin 9 missing) everything works fine (besides a
> little vertical shift to the right). :/

Testing the T60 with the VGA cable with Pin 9 missing, it still works. So this
problem is 915GM specific.

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[Bug 53544] [915GM] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #11 from Paul Menzel <paulepanter@users.sourceforge.net> ---
Created attachment 68066
  --> https://bugs.freedesktop.org/attachment.cgi?id=68066&action=edit
output of Linux kernel 3.2.23 ring buffer (dmesg)

As j4ni requested on IRC here is the output from `dmesg` from the 915GM

    $ lspci | grep VGA
    00:02.0 VGA compatible controller: Intel Corporation Mobile
915GM/GMS/910GML Express Graphics Controller (rev 04)

with Linux 3.2.23 and `drm.debug=0xe`. Though the `PIPE A underrun` message
more or less kicked the beginning out. I will repost that too.

$ xrandr --newmode "1920x1080R"  138.50  1920 1968 2000 2080  1080 1083 1088
1111 +hsync -vsync
$ xrandr --addmode VGA1 1920x1080R
$ xrandr --output VGA1 --mode 1920x1080R
$ xrandr --output VGA1 --mode 1920x1080R --output LVDS1 --off
$ dmesg > 20121004--eeepc-701-4g-VGA-1--mode.dmesg

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[Bug 53544] [915GM] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

Paul Menzel <paulepanter@users.sourceforge.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #68066|0                           |1
        is obsolete|                            |

--- Comment #12 from Paul Menzel <paulepanter@users.sourceforge.net> ---
Created attachment 68072
  --> https://bugs.freedesktop.org/attachment.cgi?id=68072&action=edit
output of Linux kernel 3.2.23 ring buffer (dmesg)

(In reply to comment #11)
> Created attachment 68066 [details]
> output of Linux kernel 3.2.23 ring buffer (dmesg)
> 
> As j4ni requested on IRC here is the output from `dmesg` from the 915GM
> 
>     $ lspci | grep VGA
>     00:02.0 VGA compatible controller: Intel Corporation Mobile
> 915GM/GMS/910GML Express Graphics Controller (rev 04)
> 
> with Linux 3.2.23 and `drm.debug=0xe`. Though the `PIPE A underrun` message
> more or less kicked the beginning out. I will repost that too.

Here it is.

$ xrandr --newmode "1920x1080R"  138.50  1920 1968 2000 2080  1080 1083 1088
1111 +hsync -vsync
$ xrandr --addmode VGA1 1920x1080R
$ xrandr --output VGA1 --mode 1920x1080R
$ xrandr --output VGA1 --mode 1920x1080R --output LVDS1 --off
$ dmesg > 20121004--eeepc-701-4g-VGA-1--mode--LVDS-off.dmesg

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[Bug 53544] [915GM] Incorrect modeline due to incorrect EDID block for LG SL80 TV

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #13 from Paul Menzel <paulepanter@users.sourceforge.net> ---
Created attachment 68073
  --> https://bugs.freedesktop.org/attachment.cgi?id=68073&action=edit
T60 (945GM): output of Linux kernel 3.2.23 ring buffer (dmesg)

Here is the output from `dmesg` from the T60 having the LG SL80 connected over
from the VGA from the beginning an image is shown but not in the correct
resolution. But it is shown.

$ xrandr --output VGA1 --auto
$ xrandr --output VGA1 --auto --output LVDS1 --off
$ dmesg > 20121004.1.tv-on--VGA1--auto--LVDS1--off.dmesg

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

--- Comment #14 from Paul Menzel <paulepanter@users.sourceforge.net> ---
In #intel-gfx, ajax confirmed that this is probably a bug in the 915(GM) part
of the driver. Unfortunately Intel has not yet released the gen3 documentation,
so for non-Intel employees it will be hard to fix this issue. Comparing
register dumps of a working and non-working Linux kernel would be one option,
but unfortunately as seen in bug 26294 I could not find a working one, although
I think it is a regression.

In the meantime ajax asked me if vesa works (boot with `nomodeset`) and I will
try to get back with this information as soon as possible.

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[Bug 53544] [915GM] Incorrect modeline due to incorrect EDID block for LG SL80 TV

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=53544

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #15 from Martin Peres <martin.peres@free.fr> ---
Hi,

Freedesktop's Bugzilla instance is EOLed and open bugs are about to be migrated
to http://gitlab.freedesktop.org.

To avoid migrating out of date bugs, I am now closing all the bugs that did not
see any activity in the past year. If the issue is still happening, please
create a new bug in the relevant project at https://gitlab.freedesktop.org/drm
(use misc by default).

Sorry about the noise!

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