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Message-ID: <20180521195320.6stbpnebgjowxwjp@shells.gnugeneration.com>
Date: Mon, 21 May 2018 12:53:20 -0700
From: Vito Caputo <vcaputo@...garu.com>
To: linux-kernel <linux-kernel@...r.kernel.org>
Subject: [REGRESSION] v4.17-rc4: xgalaga fails to start in fullscreen
(default) mode
Hello all,
4.17-rc4 (my latest kernel ATM) consistently fails to start xgalaga
without -window. I will try find time to build the latest rc this
evening.
> ~$ xgalaga
> X Error of failed request: BadValue (integer parameter out of range for operation)
> Major opcode of failed request: 152 (XFree86-VidModeExtension)
> Minor opcode of failed request: 10 (XF86VidModeSwitchToMode)
> Value in failed request: 0x120004e
> Serial number of failed request: 199
> Current serial number in output stream: 203
Haven't dug into this much yet, only did a perfunctory check by booting into a
few older kernels (4.11, 4.12, 4.16) and the problem is absent on all of them.
It appears to be a 4.17-specific regression right now.
Also observed, though this is surely a different regression, the game
ran like molasses with -window, showing some prominent kworkers in top:
692 vc 20 0 312852 45884 20556 R 32.0 1.2 0:08.69 Xorg
102 root 20 0 0 0 0 R 11.2 0.0 0:01.43 kworker/1:3
94 root 20 0 0 0 0 I 8.9 0.0 0:00.83 kworker/0:2
696 vc 20 0 39948 4124 2912 S 1.0 0.1 0:05.57 vwm
902 vc 30 10 46372 4144 3500 S 0.7 0.1 0:00.08 xgalaga
891 vc 30 10 44924 3868 3156 R 0.3 0.1 0:00.09 top
903 vc 30 10 4180 1184 1100 S 0.3 0.0 0:00.01 xgal.sndsrv.oss
The windowed performance issue was observed on the older kernels tested
as well, though 4.11 felt better and didn't have the busy kworkers.
I have not attempted to play xgalaga for ages, but it used to be perfectly
playable on this machine in windowed mode when I last did.
Machine is the venerable Thinkpad X61s, 1.8Ghz, Debian 9, config attached.
Regards,
Vito Caputo
Download attachment "4.17-rc4-config.gz" of type "application/gzip" (24464 bytes)
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