[Bug 105518] Logging into Xorg sessions ("Xorg -background none") displays corruption briefly on startup (Intel gen9 only)

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Mar 19 09:42:52 UTC 2018


--- Comment #10 from Daniel van Vugt <daniel.van.vugt at canonical.com> ---

1efd73df39b39589d26f44d4927d2c65697bbe6e is the first bad commit
commit 1efd73df39b39589d26f44d4927d2c65697bbe6e
Author: Ben Widawsky <ben at bwidawsk.net>
Date:   Tue May 30 17:24:06 2017 +0530

    i965: Advertise the CCS modifier

    v2: Rename modifier to be more smart (Jason)

    FINISHME: Use the kernel's final choice for the fb modifier

    bwidawsk at norris2:~/intel-gfx/kmscube (modifiers $)
~/scripts/measure_bandwidth.sh ./kmscube none
    Read bandwidth: 603.91 MiB/s
    Write bandwidth: 615.28 MiB/s
    bwidawsk at norris2:~/intel-gfx/kmscube (modifiers $)
~/scripts/measure_bandwidth.sh ./kmscube ytile
    Read bandwidth: 571.13 MiB/s
    Write bandwidth: 555.51 MiB/s
    bwidawsk at norris2:~/intel-gfx/kmscube (modifiers $)
~/scripts/measure_bandwidth.sh ./kmscube ccs
    Read bandwidth: 259.34 MiB/s
    Write bandwidth: 337.83 MiB/s

    v2: Move all references to the new fourcc code(s) to this patch.
    v3: Rebase, remove Yf_CCS (Daniel)

    Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
    Signed-off-by: Jason Ekstrand <jason at jlekstrand.net>
    Acked-by: Daniel Stone <daniels at collabora.com>
    Reviewed-by: Chad Versace <chadversary at chromium.org>

:040000 040000 1770769b46d6a9425e80b380e8338059841921e2
f790e3c0d1c5246c4d1385f14eac032b90acf68c M      src

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