File 0068-vnc-Set-default-kbd-delay-to-10ms.patch of Package qemu

Overview Repositories Revisions Requests Users Attributes Meta

File 0068-vnc-Set-default-kbd-delay-to-10ms.patch of Package qemu (Revision 83a863634870bafd10595f0a36e36b3a)

Currently displaying revision 83a863634870bafd10595f0a36e36b3a , Show latest

From ea61b5439c77d6fdeb62a04c39affa534b09fcdd Mon Sep 17 00:00:00 2001
From: Alexander Graf <agraf@suse.de>
Date: Wed, 12 Jul 2017 14:43:45 +0200
Subject: [PATCH] vnc: Set default kbd delay to 10ms

The current VNC default keyboard delay is 1ms. With that we're constantly
typing faster than the guest receives keyboard events from an XHCI attached
USB HID device.

The default keyboard delay time in the input layer however is 10ms. I don't know
how that number came to be, but empirical tests on some OpenQA driven ARM
systems show that 10ms really is a reasonable default number for the delay.

This patch moves the VNC delay also to 10ms. That way our default is much
safer (good!) and also consistent with the input layer default (also good!).

Signed-off-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 1499863425-103133-1-git-send-email-agraf@suse.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
(cherry picked from commit d3b0db6dfea6b3a9ee0d96aceb796bdcafa84314)
[BR: BSC#1031692]
Signed-off-by: Bruce Rogers <brogers@suse.com>
---
 qemu-options.hx | 2 +-
 ui/vnc.c        | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/qemu-options.hx b/qemu-options.hx
index 4712277d7c..ab7e32a4a0 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1491,7 +1491,7 @@ spec but is traditional QEMU behavior.
 @item key-delay-ms
 
 Set keyboard delay, for key down and key up events, in milliseconds.
-Default is 1.  Keyboards are low-bandwidth devices, so this slowdown
+Default is 10.  Keyboards are low-bandwidth devices, so this slowdown
 can help the device and guest to keep up and not lose events in case
 events are arriving in bulk.  Possible causes for the latter are flaky
 network connections, or scripts for automated testing.
diff --git a/ui/vnc.c b/ui/vnc.c
index 51d6f2353f..3528d50c8a 100644
--- a/ui/vnc.c
+++ b/ui/vnc.c
@@ -3884,7 +3884,7 @@ void vnc_display_open(const char *id, Error **errp)
     }
 
     lock_key_sync = qemu_opt_get_bool(opts, "lock-key-sync", true);
-    key_delay_ms = qemu_opt_get_number(opts, "key-delay-ms", 1);
+    key_delay_ms = qemu_opt_get_number(opts, "key-delay-ms", 10);
     sasl = qemu_opt_get_bool(opts, "sasl", false);
 #ifndef CONFIG_VNC_SASL
     if (sasl) {

Places

File 0068-vnc-Set-default-kbd-delay-to-10ms.patch of Package qemu (Revision 83a863634870bafd10595f0a36e36b3a)

Places