qemu/edid-set-default-resolution-to-1280x800-WXGA.patch
Jiabo Feng f4f53a5098 QEMU update to version 6.2.0-106:
- hw/nvme: Remove redundant dma_blk_write
- tests/avocado/machine_s390_ccw_virtio: Adapt test to new default resolution
- edid: set default resolution to 1280x800 (WXGA)
- iotests/308: Fix for CAP_DAC_OVERRIDE
- hvf: remove unused but set variable
- vvfat: Fix vvfat_write() for writes before the root directory
- hw/misc/nrf51_rng: Don't use BIT_MASK() when we mean BIT()
- hw/pci: Remove unused pci_irq_pulse() method
- ui/gtk: fix leaks found wtih fuzzing
- target/i386: fix size of EBP writeback in gen_enter()
- tests/qtest/fuzz: fix memleak in qos_fuzz.c
- hw/core/loader: gunzip(): fix memory leak on error path
- migration: fix a typo
- scsi: fetch unit attention when creating the request
- raw-format: Fix error message for invalid offset/size
- tcg: Reset data_gen_ptr correctly
- Fix calculation of minimum in colo_compare_tcp
- hw/intc: Don't clear pending bits on IRQ lowering
- target/arm: Drop user-only special case in sve_stN_r
- usb-hub: Fix handling port power control messages
- target/ppc: Set ctx->opcode for decode_insn32()
- linux-user: Add proper strace format strings for getdents()/getdents64()
- linux-user: Fix TARGET_PROT_SEM for XTENSA
- linux-user/hppa: Set TASK_UNMAPPED_BASE to 0xfa000000 for hppa arch
- linux-user/hppa: Dump IIR on register dump
- tests: Fix typo in check-help output
- qdev-core.h: Fix wrongly named reference to TYPE_SPLIT_IRQ
- hw/scsi/megasas: Simplify using the ldst API
- gqa-win: get_pci_info: Clean dev_info if handle is valid
- target/ppc: Fix 7448 support
- vvfat: Fix size of temporary qcow file
- docs: Correct 'vhost-user-blk' spelling
- jackaudio: use ifdefs to hide unavailable functions
- simplebench: Fix Python syntax error (reported by LGTM)
- python: update type hints for mypy 0.930
- Python/aqmp: fix type definitions for mypy 0.920
- tcg: Allow top bit of SIMD_DATA_BITS to be set in simd_desc()
- hw/ppc/e500: Prefer QOM cast
- hw/ppc/e500: Remove unused "irqs" parameter
- hw/ppc/e500: Add missing device tree properties to i2c controller node
- linux-user: Show timespec on strace for futex()
- linux-user: Add strace for clock_nanosleep()
- linux-user: Fix strace of chmod() if mode == 0
- linux-user: Log failing executable in EXCP_DUMP()
- linux-user: Add pidfd_open(), pidfd_send_signal() and pidfd_getfd() syscalls

Signed-off-by: Jiabo Feng <fengjiabo1@huawei.com>
(cherry picked from commit 87ebac5b5cfb97ddb7ac2af097703758fb0751c4)
2025-02-21 17:43:48 +08:00

115 lines
4.4 KiB
Diff

From 33d5ea75f73c19ed9058fa700eb65a405c7c7bcc Mon Sep 17 00:00:00 2001
From: Luo Yifan <luoyifan_yewu@cmss.chinamobile.com>
Date: Wed, 20 Nov 2024 11:13:22 +0800
Subject: [PATCH] edid: set default resolution to 1280x800 (WXGA)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
cherry picked from commit de72c4b7cdf6ec18bfe9fe714aa96e48db6fd895
Currently QEMU defaults to a resolution of 1024x768 when exposing EDID
info to the guest OS. The EDID default info is important as this will
influence what resolution many guest OS will configure the screen with
on boot. It can also potentially influence what resolution the firmware
will configure the screen with, though until very recently EDK2 would
not handle EDID info.
One important thing to bear in mind is that the default graphics card
driver provided by Windows will leave the display set to whatever
resolution was enabled by the firmware on boot. Even if sufficient
VRAM is available, the resolution can't be changed without installing
new drivers. IOW, the default resolution choice is quite important
for usability of Windows.
Modern real world monitor hardware for desktop/laptop has supported
resolutions higher than 1024x768 for a long time now, perhaps as long
as 15+ years. There are quite a wide variety of native resolutions in
use today, however, and in wide screen form factors the height may not
be all that tall.
None the less, it is considered that there is scope for making the
QEMU default resolution slightly larger.
In considering what possible new default could be suitable, choices
considered were 1280x720 (720p), 1280x800 (WXGA) and 1280x1024 (SXGA).
In many ways, vertical space is the most important, and so 720p was
discarded due to loosing vertical space, despite being 25% wider.
The SXGA resolution would be good, but when taking into account
window titlebars/toolbars and window manager desktop UI, this might
be a little too tall for some users to fit the guest on their physical
montior.
This patch thus suggests a modest change to 1280x800 (WXGA). This
only consumes 1 MB per colour channel, allowing double buffered
framebuffer in 8 MB of VRAM. Width wise this is 25% larger than
QEMU's current default, but height wise this only adds 5%, so the
difference isn't massive on the QEMU side.
Overall there doesn't appear to be a compelling reason to stick
with 1024x768 resolution.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20211129140508.1745130-1-berrange@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Luo Yifan <luoyifan_yewu@cmss.chinamobile.com>
---
hw/display/edid-generate.c | 4 ++--
include/hw/virtio/virtio-gpu.h | 4 ++--
qemu-edid.c | 4 ++--
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/hw/display/edid-generate.c b/hw/display/edid-generate.c
index f2b874d5e3..6f5ac6a38a 100644
--- a/hw/display/edid-generate.c
+++ b/hw/display/edid-generate.c
@@ -401,10 +401,10 @@ void qemu_edid_generate(uint8_t *edid, size_t size,
info->name = "QEMU Monitor";
}
if (!info->prefx) {
- info->prefx = 1024;
+ info->prefx = 1280;
}
if (!info->prefy) {
- info->prefy = 768;
+ info->prefy = 800;
}
if (info->prefx >= 4096 || info->prefy >= 4096) {
large_screen = 1;
diff --git a/include/hw/virtio/virtio-gpu.h b/include/hw/virtio/virtio-gpu.h
index acfba7c76c..2179b75703 100644
--- a/include/hw/virtio/virtio-gpu.h
+++ b/include/hw/virtio/virtio-gpu.h
@@ -147,8 +147,8 @@ struct VirtIOGPUBaseClass {
DEFINE_PROP_UINT32("max_outputs", _state, _conf.max_outputs, 1), \
DEFINE_PROP_BIT("edid", _state, _conf.flags, \
VIRTIO_GPU_FLAG_EDID_ENABLED, true), \
- DEFINE_PROP_UINT32("xres", _state, _conf.xres, 1024), \
- DEFINE_PROP_UINT32("yres", _state, _conf.yres, 768)
+ DEFINE_PROP_UINT32("xres", _state, _conf.xres, 1280), \
+ DEFINE_PROP_UINT32("yres", _state, _conf.yres, 800)
typedef struct VGPUDMABuf {
QemuDmaBuf buf;
diff --git a/qemu-edid.c b/qemu-edid.c
index c3a9fba10d..20c958d9c7 100644
--- a/qemu-edid.c
+++ b/qemu-edid.c
@@ -10,8 +10,8 @@
#include "hw/display/edid.h"
static qemu_edid_info info = {
- .prefx = 1024,
- .prefy = 768,
+ .prefx = 1280,
+ .prefy = 800,
};
static void usage(FILE *out)
--
2.41.0.windows.1