[Bug 106804] i195: modesetting stops working on kernel 4.17, works fine on 4.16

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106804

--- Comment #1 from Arkadiusz Miskiewicz <arekm at maven.pl> ---
>From strace:

1880  ioctl(14, DRM_IOCTL_I915_GEM_MMAP <unfinished ...>
1895  <... read resumed> 0x2163e98, 7752) = -1 EAGAIN (Resource temporarily
unavailable)
1880  <... ioctl resumed> , 0x7ffe47fdf6b0) = 0
1895  read(37, 0x2163e80, 7776)         = -1 EAGAIN (Resource temporarily
unavailable)
1895  read(37, 0x2163e68, 7800)         = -1 EAGAIN (Resource temporarily
unavailable)
1895  read(37,  <unfinished ...>
1880  ioctl(16, DRM_IOCTL_MODE_LIST_LESSEES <unfinished ...>
1895  <... read resumed> 0x2163e50, 7824) = -1 EAGAIN (Resource temporarily
unavailable)
1880  <... ioctl resumed> , 0x7ffe47fdf9a0) = 0
1880  ioctl(16, DRM_IOCTL_MODE_LIST_LESSEES, 0x7ffe47fdf9a0) = 0
1880  ioctl(14, DRM_IOCTL_MODE_DIRTYFB, 0x7ffe47fdf980) = -1 ENOENT (No such
file or directory)
1880  ioctl(14, DRM_IOCTL_MODE_SETGAMMA <unfinished ...>
1895  write(22, "\0", 1)                = 1
1895  epoll_wait(25,  <unfinished ...>
1880  <... ioctl resumed> , 0x7ffe47fdf8e0) = 0
1880  ioctl(14, DRM_IOCTL_MODE_ADDFB2, 0x7ffe47fdf6e0) = 0
1880  ioctl(14, DRM_IOCTL_MODE_CREATEPROPBLOB, 0x7ffe47fdf740) = 0
1880  ioctl(14, DRM_IOCTL_MODE_ATOMIC, 0x7ffe47fdf7f0) = -1 EINVAL (Invalid
argument)
1880  write(4, "[   126.170] ", 13)     = 13
1880  write(4, "(EE) modeset(0): failed to set mode: Invalid argument\n", 54) =
54
1880  epoll_wait(3, [{EPOLLIN, {u32=31794656, u64=31794656}}], 256, 599996) = 1

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